What is the NUCC code for infectious disease specialists and what does the full taxonomy name look like?

The NUCC code is 207RI0200X. The full taxonomy name is 'Internal Medicine, Infectious Disease' — ID is a subspecialty of Internal Medicine in the NUCC taxonomy hierarchy, similar to how Interventional Cardiology (207RI0011X) is a subspecialty of Internal Medicine, Cardiovascular Disease. The API query 'Infectious Disease' works because the API prefix-matches on the taxonomy_description field and 'Infectious Disease' appears in the full name.

What other record types appear in an Infectious Disease NPI query beyond physician ID specialists?

The Memphis query returned 92 records (2026-06-13). The primary taxonomy breakdown: 80 records with 'Internal Medicine, Infectious Disease' (207RI0200X — physician ID specialists), 3 with 'Pharmacist, Infectious Diseases' (1835I0206X — ID-trained pharmacists), 1 with Pediatric Infectious Diseases (a separate pediatric subspecialty code), 5 with Internal Medicine primary, and 3 others. For a pharma or antimicrobial device rep targeting physician prescribers, filter on NPI-1 entity type and 207RI0200X primary taxonomy for the clean 54-physician call list.

What antimicrobial and antiviral pharma products map to an infectious disease call list?

Infectious disease physicians are the primary decision-makers for hospital formulary inclusion of antibiotics, antifungals, and antivirals — particularly newer agents for resistant organisms (MRSA, CRE, VRE, MDR-TB), HIV antiretrovirals, hepatitis C antivirals, and antifungal prophylaxis for immunocompromised patients. An antimicrobial pharma rep's highest-value calls are typically the ID specialist and the Antimicrobial Stewardship pharmacist — both of whom appear in the 'Infectious Disease' NPI query (207RI0200X for physicians, 1835I0206X for ID pharmacists).

Find Infectious Disease Doctors by Zip Code — NPI Registry Guide

Q: Why does 'ID' return zero NPI results when it is the universal clinical abbreviation for infectious disease?

The NPI API performs exact or prefix matching on taxonomy_description. 'ID' does not match any NUCC taxonomy string — the abbreviation is clinical shorthand, not a formal taxonomy designation. The correct string is 'Infectious Disease' (207RI0200X). This is the most universal-abbreviation-to-zero-result mismatch in the registry: 'ID' is used in every hospital hallway to refer to this specialty, but returns nothing when queried.

Q: Are Pediatric Infectious Disease specialists included in a standard Infectious Disease query?

Pediatric Infectious Diseases is a separate NUCC subspecialty (2080P0208X) under Pediatrics, not Internal Medicine. The national query for 'Pediatric Infectious Diseases' returned 200+ records (capped) — a substantial separate population. In the Memphis raw data (92 records), 1 Pediatric Infectious Diseases record appeared. For a rep covering both adult and pediatric ID — common for antimicrobial or antifungal products — run both 'Infectious Disease' and 'Pediatric Infectious Diseases' as separate queries and combine the call lists.

Q: How does the Memphis infectious disease call list compare to Wyoming and Vermont?

Memphis returned 92 records (54 NPI-1 individual providers); Wyoming statewide returned 19; Vermont statewide returned 32. Infectious disease density tracks with academic medical center presence — Memphis has UTHSC, St. Jude Children's Research Hospital, and Regional One Health, all with active ID divisions. Wyoming's 19 and Vermont's 32 are complete statewide counts — small enough to work as complete call lists without radius math.

Published 2026-06-13 · Data queried from CMS NPI Registry v2.1 · getdork

Methodology: All counts queried live from CMS NPI Registry API v2.1 on 2026-06-13 using taxonomy_description=Infectious+Disease. No auth required. Raw data: npi-counts-infectious-disease.json · Memphis raw · Wyoming raw · Script: npi-counts-infectious-disease.ps1

The short answer: Use taxonomy_description=Infectious+Disease (NUCC 207RI0200X — full taxonomy name: "Internal Medicine, Infectious Disease"). The universal clinical abbreviation "ID" returns zero. Memphis returned 92 records (54 NPI-1 physician ID specialists) on 2026-06-13.

Critical gotcha — empirically verified 2026-06-13: taxonomy_description=ID → 0 results — the abbreviation every clinician uses returns nothing in the NPI API. The correct string is Infectious Disease (NUCC 207RI0200X). The query also returns ID pharmacists (Pharmacist, Infectious Diseases, 1835I0206X) and a small number of Pediatric Infectious Diseases records alongside physician specialists — filter on primary taxonomy 207RI0200X and entity type NPI-1 for a clean physician-only call list.

Infectious disease records by market — 2026-06-13

Market	Records returned	Notes
New York, NY	200+	Capped — dense academic ID programs
Chicago, IL	200+	Capped
Los Angeles, CA	200+	Capped
Houston, TX	200+	Capped
Phoenix, AZ	126	Complete city count
Nashville, TN	125	Complete city count
Memphis, TN	92	Complete count — see drill-down below
Vermont (statewide)	32	Complete statewide count
Wyoming (statewide)	19	Complete statewide count — very sparse

Source: npi-counts-infectious-disease.json, queried 2026-06-13.

Memphis drill-down — Infectious Disease, 2026-06-13 (n=92)
Entity type: 54 NPI-1 (individual providers) · 38 NPI-2 (organizations: ID clinics, hospital-based ID divisions, HIV care centers)
Primary taxonomy breakdown:
• 80 records: 207RI0200X — Internal Medicine, Infectious Disease (physician ID specialists)
• 3 records: 1835I0206X — Pharmacist, Infectious Diseases (ID stewardship pharmacists)
• 1 record: 2080P0208X — Pediatrics, Pediatric Infectious Diseases
• 5 records: Internal Medicine (generalists at same address)
• 3 records: Physician Assistant, Critical Care, other
Credential breakdown (NPI-1): MD: 27 · M.D.: 18 · (none/NPI-2 orgs): 40 · PharmD: 2 · others: 5

For a pharma rep targeting physician prescribers: filter NPI-1 + primary taxonomy 207RI0200X for the ~54 active physician ID specialists. The 3 ID pharmacists (PharmD credential) are also high-value stewardship contacts for formulary discussions.

Wyoming comparison (n=19): A complete statewide list. Wyoming's small ID population concentrates at the Wyoming Medical Center (Casper) and UW-affiliated programs. A statewide query with no city filter captures all 19 in a single request.

Infectious disease taxonomy breakdown

Taxonomy string	NUCC code	Who they are	National sample
`Infectious Disease`	207RI0200X	Physician ID specialists — antimicrobial prescribers, HIV specialists, transplant ID, hospital epidemiology	200+ (capped)
`Pediatric Infectious Diseases`	2080P0208X	Pediatric ID subspecialists — separate from adult ID, under Pediatrics taxonomy group	200+ (capped)
`ID` (abbreviation)	N/A	Clinical abbreviation — not a NUCC taxonomy string	0 results

Verified live 2026-06-13. Source: npi-counts-infectious-disease.json.

How to build an infectious disease call list

Query Infectious Disease — not ID

https://npiregistry.cms.hhs.gov/api/?version=2.1
  &taxonomy_description=Infectious+Disease
  &city=Memphis&state=TN&limit=200

Returns 92 records for Memphis. Filter on entity type NPI-1 and primary taxonomy 207RI0200X for the physician-only call list. The 3 ID pharmacist records (1835I0206X) are high-value stewardship contacts — many pharma reps keep them on a separate pharmacy call list rather than the physician list.

For pediatric ID products, run a separate Pediatric Infectious Diseases query

Pediatric ID specialists enumerate under Pediatrics, Pediatric Infectious Diseases (2080P0208X) — a separate query from adult ID. The national query returned 200+ (capped). If your antimicrobial or antiviral covers pediatric indications, combine both lists and deduplicate on NPI number before CRM import.

Use expanded radius for sparse markets

Wyoming: 19 total statewide. Vermont: 32 total statewide. ID specialists concentrate at academic medical centers, transplant programs, and large hospital systems with immunocompromised patient populations. In sparse states, query statewide. In mid-size metros, 25–50 miles captures the regional referral network.

Search infectious disease doctors by ZIP — free
getdork queries Infectious Disease (not the zero-returning "ID"), applies radius filtering, and exports a CRM-ready CSV — physician ID specialists, NPI numbers, addresses, and phones.

Search infectious disease doctors in your territory →

Radius guidance for infectious disease territories

Infectious disease is a moderately sparse specialty. It concentrates at academic medical centers, transplant programs, HIV care clinics, and large hospital systems — less distributed than primary care, more distributed than cardiothoracic surgery.

Dense urban (NYC, Chicago, LA, Houston — all 200+): 15–25 miles covers the major hospital clusters and outpatient ID clinics
Mid-size metro (Memphis: 92, Nashville: 125, Phoenix: 126): 25–50 miles captures the metro area's hospital and academic ID programs
Sparse state (Wyoming: 19, Vermont: 32): query statewide — small complete lists with no radius math needed

Frequently asked questions

Why does "ID" return zero NPI results when it is the universal clinical abbreviation?

The NPI API matches on taxonomy_description using exact or prefix logic. "ID" does not match any NUCC taxonomy string — the abbreviation is clinical shorthand, not a formal taxonomy designation. The correct string is "Infectious Disease" (207RI0200X). This is one of the most striking abbreviation-to-zero mismatches in the registry: "ID" appears in every hospital culture result, every antibiotic order set, every consult note — but queries nothing in the NPI API.

What is the NUCC code for infectious disease specialists?

NUCC 207RI0200X, full taxonomy name: "Internal Medicine, Infectious Disease." Like other ID subspecialties (Interventional Cardiology, Gastroenterology), Infectious Disease is classified as a subspecialty of Internal Medicine in the NUCC hierarchy. The query "Infectious Disease" prefix-matches on this full name. The parent Internal Medicine relationship is taxonomic structure — querying "Infectious Disease" returns 207RI0200X records specifically, not all internists.

What other record types appear in an Infectious Disease NPI query?

Memphis returned 92 records (2026-06-13). Beyond the 80 physician ID specialists (207RI0200X): 3 ID pharmacists (Pharmacist, Infectious Diseases, 1835I0206X), 1 Pediatric ID specialist (2080P0208X), 5 general internists, 3 others. Filter on NPI-1 + primary taxonomy 207RI0200X for the clean physician call list. ID pharmacists (PharmD) are also high-value contacts for antimicrobial stewardship discussions.

Are Pediatric Infectious Disease specialists included in a standard Infectious Disease query?

Mostly no. Pediatric Infectious Diseases (2080P0208X) is a separate NUCC subspecialty under Pediatrics — not under Internal Medicine, Infectious Disease. In Memphis, 1 Pediatric ID record appeared in the query page (likely address-matched). For coverage of both adult and pediatric ID — relevant for broad-spectrum antimicrobials and antivirals — run both "Infectious Disease" and "Pediatric Infectious Diseases" as separate queries and combine.

How does the Memphis infectious disease call list compare to Wyoming?

Memphis returned 92 (54 NPI-1 physicians); Wyoming statewide returned 19. Memphis's density reflects UTHSC, St. Jude Children's Research Hospital, and Regional One Health — all with active ID divisions and transplant programs. Wyoming's 19 are the complete statewide count; a city-only Casper query would miss ID physicians at other Wyoming hospitals. Always use statewide queries for sparse-state ID territories.

What antimicrobial pharma and diagnostic products map to an infectious disease call list?

Physician ID specialists (207RI0200X) are the primary decision-makers for hospital formulary inclusion of antibiotics (new-generation cephalosporins, carbapenems, beta-lactam combos), antifungals (azoles, echinocandins for invasive candidiasis), antivirals (HIV regimens, hepatitis C DAAs, CMV prophylaxis in transplant), and diagnostic stewardship (rapid pathogen panels, blood culture technology). The 3 ID pharmacists in the Memphis dataset (1835I0206X) are often the antimicrobial stewardship committee members who influence formulary decisions. Both are worth separate call segments.

Methodology

All data queried live from CMS NPI Registry API v2.1 on 2026-06-13. The gotcha query taxonomy_description=ID confirmed zero results. Pediatric Infectious Diseases national sample confirmed 200+ (capped), establishing it as a separate population from adult ID. All raw files available above.

Related guides

How to search the NPI registry
What is an NPI number?
How to find physicians by specialty and state
Find internal medicine doctors by zip code — the parent specialty (207R00000X)
Find pulmonologists by zip code — overlapping ICU and hospital medicine call list