Emergency Medicine (NUCC 207P00000X). Every natural-language alternative — "Emergency Physician," "ER Physician," "Emergency Room" — returns zero results. This is the single most important fact on this page: if you use the wrong string, you get nothing, with no error message.
taxonomy_description=Emergency+Physician → 0 resultstaxonomy_description=ER+Physician → 0 resultstaxonomy_description=Emergency+Room → 0 resultstaxonomy_description=Emergency+Medicine → returns complete results in every market queried. This was confirmed by running the NPI API directly — the API returns no error for wrong strings, just an empty result set.
If you have ever built an emergency medicine call list by searching clinical terms and gotten nothing back, this is why. The NPI registry uses NUCC taxonomy descriptors, which are distinct from clinical job titles, facility names, or specialty abbreviations. The NUCC code for emergency medicine is 207P00000X; its exact string is Emergency Medicine.
| Market | NPI records returned | Notes |
|---|---|---|
| New York, NY | 200+ | Capped — actual total exceeds 200 |
| Los Angeles, CA | 200+ | Capped |
| Chicago, IL | 200+ | Capped |
| Houston, TX | 200+ | Capped |
| Phoenix, AZ | 200+ | Capped |
| Nashville, TN | 200+ | Capped |
| Memphis, TN | 200+ | Capped; 177 NPI-1, 23 NPI-2 |
| Wyoming (statewide) | 200+ | Capped statewide — EM is one of the few specialties that caps even in sparsely populated states |
| Vermont (statewide) | 200+ | Capped statewide |
Source: CMS NPI Registry API v2.1, queried June 13, 2026. "200+" indicates the API's hard per-page cap was reached; actual totals exceed 200 but are not directly retrievable from the API. Download: npi-counts-emergency-medicine.json
Emergency medicine is one of the specialties where even sparsely populated states hit the API cap — because NPs, PAs, residents, and non-physician EM providers also enumerate under the taxonomy. For a physician-only call list, filter by credential (MD or DO) after pulling the data.
Set taxonomy_description=Emergency+Medicine. Do not use clinical shorthand. The API performs prefix matching, so this string also captures subspecialty variants that start with "Emergency Medicine" (Pediatric EM, EMS physicians, Sports Medicine EM).
Use city=Memphis&state=TN for city-level queries, or state=WY for statewide. Because EM physicians practice at hospital addresses — not always in their home city — a ZIP-radius query (available in getdork) captures providers at facilities across the metro more reliably than city-name filtering alone.
https://npiregistry.cms.hhs.gov/api/?version=2.1
&taxonomy_description=Emergency+Medicine
&city=Memphis&state=TN
&limit=200Check the enumeration_type field in each record. NPI-1 = individual provider. NPI-2 = organization. For a physician outreach list, filter to NPI-1 and then credential (MD, D.O., M.D.). For hospital contracting research, note which NPI-2 organizations appear alongside individual physicians.
Pediatric Emergency Medicine, Emergency Medical Services, Medical Toxicology, and Undersea and Hyperbaric Medicine each have their own NUCC codes. The base Emergency Medicine query prefix-matches some of these, but running dedicated queries for each subspecialty gives you cleaner, non-overlapping lists when you need them separately.
The getdork physician search tool handles the query, radius math, and export in one step. Pro users download a CRM-ready CSV with BOM for Excel compatibility. All NPI fields are included: NPI, Name, Credential, Address, City, State, ZIP, Phone, Entity Type.
| Subspecialty | NUCC code | Taxonomy string (exact) | Returned in base EM query? |
|---|---|---|---|
| Emergency Medicine (base) | 207P00000X | Emergency Medicine |
Yes — this is the base query |
| Pediatric Emergency Medicine | 207PP0204X | Emergency Medicine, Pediatric Emergency Medicine |
Yes — prefix-matched in base query |
| Emergency Medical Services | 207PE0004X | Emergency Medicine, Emergency Medical Services |
Yes — prefix-matched |
| Medical Toxicology | 207PT0002X | Medical Toxicology |
No — separate string required (national sample: 200+) |
| Undersea and Hyperbaric Medicine | 207PE0005X | Undersea and Hyperbaric Medicine |
No — separate string required (national sample: 200+) |
| Sports Medicine (EM parent) | 207PS0010X | Emergency Medicine, Sports Medicine |
Yes — prefix-matched |
Emergency physicians work at facilities, not in offices — which changes how you think about radius. In a major metro like Memphis, a 25-mile radius captures the Level I/II trauma centers and major EDs. In rural Wyoming, EM physicians often cover multiple facilities and may commute significant distances; a 75–100 mile radius gives you the relevant physician population statewide.
Because emergency physicians bill under their hospital facility address (or their group practice address), city-name filtering can miss providers whose NPI address is in a suburb. A ZIP-radius approach in getdork is more reliable than city-name filtering for this specialty.
| Market type | Suggested radius |
|---|---|
| Dense urban (NYC, Chicago, LA) | 10–20 miles |
| Mid-size metro (Memphis, Nashville, Phoenix) | 25 miles |
| Rural / low-density (Wyoming statewide) | 75–100 miles or statewide query |
The getdork physician search sends the correct Emergency Medicine taxonomy string automatically, applies ZIP-radius filtering, and returns a CRM-ready result set. Pro users export to CSV. No enterprise contract required.
The NPI registry uses NUCC taxonomy strings, not clinical job titles. The NUCC code for emergency medicine physicians is 207P00000X, and its corresponding taxonomy_description string is Emergency Medicine — not any of the natural-language terms clinicians and administrators use. Every intuitive variant returns zero with no error message. The only working string is the exact NUCC label.
In a live Memphis query (200 records, June 2026), 23 records were NPI-2 organization entities — hospital EDs and emergency physician group practices. For a rep selling into hospital systems, the NPI-2 record often identifies the contracting entity that holds the purchasing relationship. Mapping individual physician NPI-1 records to the group NPI-2 that employs them gives you both the prescriber and the administrative contact in one dataset.
Partially. Physicians with a primary taxonomy starting with "Emergency Medicine" (Pediatric EM, EMS physicians, Sports Medicine EM) prefix-match the base query and are included. But Medical Toxicology and Undersea and Hyperbaric Medicine use strings that do not start with "Emergency Medicine" — those require separate queries for a complete picture.
Every market in our June 2026 run hit the 200-record cap, including Wyoming and Vermont statewide. For a more accurate city count, break the query into ZIP-code-level requests or use getdork's radius search, which aggregates across ZIPs automatically. The actual EM physician population in a major metro is in the hundreds to thousands when you include all hospital facilities.
For most products, no — and the NPI data signals why. Emergency physicians practice in high-acuity, restricted-access environments. The NPI address for many EM physicians resolves to a hospital facility. The more productive use of this call list is hospital-access planning: identify which physicians are at which facilities, then route introductions through the hospital's supply chain or medical staff office. For procedural sedation agents, point-of-care diagnostics, and hemorrhage control devices, the department director is typically the contracting entry point.
The NPI API's taxonomy_description= parameter performs prefix matching. Since "Emergency Medicine, Pediatric Emergency Medicine" starts with "Emergency Medicine," it is returned in a standard EM query — but as its own primary taxonomy category. Of 200 Memphis records, the breakdown included 129 pure Emergency Medicine, 13 Emergency Medicine/Pediatric EM, 5 Emergency Medicine/EMS, and 53 other records where Emergency Medicine is a secondary taxonomy. This mix matters when your product targets a specific EM sub-population.
taxonomy_description=Emergency+Medicine with the geographic parameters shown. No data is cached or estimated — all figures are live API responses. The 200-record cap is a hard limit of the NPI API; "200+" means the cap was hit and the true total exceeds 200. Raw JSON responses are available for download above. The NPI registry is updated in real time as providers submit changes to CMS.