MARIA SUSAN BUHAY-MAGLUNOG MD INC
MARIA SUSAN BUHAY-MAGLUNOG MD INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003081209, based in West Covina, CA. It is classified under Rheumatology Physician.
Getting there
Here is what surrounds this office in West Covina, based on OpenStreetMap data collected Sep 4, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. The nearest transit stop is 848 ft away, served by Foothill Transit 281.
Getting here and what is nearby
Convenience ExtraMile 233 ft ~1 min
Gas station Chevron 293 ft ~2 min
1209 South Sunset Avenue, West Covina 91790
Transit Foothill Transit 272, 281 385 ft ~2 min
Transit Foothill Transit 272, 281 385 ft ~2 min
Convenience ampm 440 ft ~2 min
Gas station Arco 402 ft ~2 min
1333 West Merced Avenue, West Covina 91790
Transit Foothill Transit 281 848 ft ~4 min
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 |
|---|---|---|
| A42390 | CA | Rheumatology Physician primary |
This provider holds licence A42390 issued in CA. 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 8325196892
- Enrollment ID
- O20090511000555
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Rheumatology covers
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and "collagen" diseases. NUCC Health Care Provider Taxonomy, code 207RR0500X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003081209 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Apr 28, 2008 |
| Last updated | Feb 3, 2009 |
| Status | Active |
| Practice address |
1250 S SUNSET AVE SUITE 201 West Covina, CA 91790 (626) 962-3254 Fax (962) 962-1266 |
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 | 8 | 1 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 8 | 2 | 2 | 0 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.