Margaret Mcnairy, MD
Margaret Mcnairy, MD is a Hospitalist Physician in Saint Louis, MO, registered under NPI 1003033184. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Saint Louis, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 0.20 mi away at UHSP Garage. The nearest transit stop is 902 ft away, served by Forest Park at Euclid Eastbound. A pharmacy sits 0.38 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.26 mi away.
Getting here and what is nearby
Parking 113 ft ~1 min
Parking Children’s Patient & Family Garage 272 ft ~2 min
Restaurant Chick-fil-A 740 ft ~3 min
4588 Parkview Place, Saint Louis 63110
Mo-Fr 08:00-20:00; Sa 09:00-17:00; Su off
Coffee Starbucks 768 ft ~3 min
Transit Barnes Jewish Hospital Plaza 842 ft ~4 min
Restaurant Applebee's 831 ft ~4 min
4550 Forest Park Avenue, Saint Louis 63108
Su-Th 10:30-22:00; Fr,Sa 10:30-13:00
Transit Barnes Jewish Hospital Plaza 872 ft ~4 min
Transit Forest Park at Euclid Eastbound 902 ft ~4 min
Hotel DoubleTree by Hilton 894 ft ~4 min
Parking UHSP Garage 0.20 mi ~4 min
4531 Nash Way
Restaurant Panera Bread 0.20 mi ~4 min
23 South Euclid Avenue, Saint Louis 63108
Mo-Su 06:00-22:00
Coffee Patisserie Svoi 0.23 mi ~5 min
Coffee Bubblecup Tea Zone & Ice Cave 0.26 mi ~6 min
Hotel Barnes Lodge 0.35 mi ~7 min
Pharmacy Gateway Apothecary 0.35 mi ~7 min
4473 Forest Park Avenue, Saint Louis 63108
Grocery Whole Foods Market 0.36 mi ~8 min
4577 West Pine Boulevard, Saint Louis 63108
Mo-Su 08:00-22:00
Pharmacy Walgreens 0.38 mi ~8 min
115 North Euclid Avenue, Saint Louis 63108
Mo-Fr 08:30-18:00
Hotel Hotel Indigo St. Louis - Central West End 0.42 mi ~9 min
Convenience Standard Oil 0.50 mi ~11 min
4403 Laclede Avenue, Saint Louis 63108
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 2025051392 | MO | Internal Medicine Physician |
| 2025051392 | MO | Hospitalist Physician primary |
This provider holds licence 2025051392 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Internal Medicine
- PAC ID
- 0749331668
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| New York | I20101008000000 | Practitioner - Internal Medicine |
| Missouri | I20260211003669 | Practitioner - Hospitalist |
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. There are 2 separate enrolment records across 2 states (NY, MO). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Hospitalist covers
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | 2025051392 | MO | |
| 208M00000X | Hospitalist Physician | 2025051392 | MO | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003033184 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 19, 2007 |
| Last updated | Dec 29, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
1 BARNES JEWISH HOSPITAL PLZ DIV IM HOSPITALIST Saint Louis, MO 63110 (314) 362-1700 Fax (314) 362-9878 |
| Mailing address |
PO BOX 7412011 Chicago, IL 60674 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 3 | 3 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 6 | 1 | 7 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.