Monica Chen, MD
Monica Chen, MD is a Medical Oncology Physician in New York, NY, registered under NPI 1003313800. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 0.37 mi away at Centerpark East 66th Street Parking Garage. The nearest transit stop is 305 ft away, served by East 68th Street & York Avenue. A pharmacy sits 0.20 mi from the entrance (HealthSource Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 428 ft away.
Getting here and what is nearby
Transit East 67th Street & York Avenue 227 ft ~1 min
Transit East 68th Street & 1st Avenue 262 ft ~1 min
Transit East 68th Street & York Avenue 305 ft ~2 min
Restaurant Sophie's Cuban Cuisine 296 ft ~2 min
Coffee Le Pain Quotidien 373 ft ~2 min
1270 1st Avenue, New York 10021
Mo-Fr 07:00-19:30; Sa-Su 07:30-19:30
Restaurant Taco Bell 348 ft ~2 min
Coffee Heavenly Market Cafe 400 ft ~2 min
1274 1st Avenue
Coffee Yia Yia's Homemade Greek Food 428 ft ~2 min
Convenience Queenie 427 ft ~2 min
1278 1st Avenue
Restaurant Bamboo Sushi 442 ft ~2 min
Pharmacy Vitahealth Apothecary 467 ft ~2 min
1235 1st Avenue
Convenience The Deli Deli 595 ft ~3 min
1219 1st Avenue, 10065
Parking 589 ft ~3 min
403 East 65th Street, New York 10065
Grocery Gristedes 645 ft ~3 min
Convenience Quick Stop on First Ave 677 ft ~3 min
1293 1st Avenue
Pharmacy Goldberg's Pharmacy 761 ft ~3 min
Mo-Th 08:30-20:00; Fr 08:30-19:00; Sa 09:00-16:00
Parking 1,005 ft ~4 min
337 East 64th Street, New York 10065
Pharmacy HealthSource Pharmacy 0.20 mi ~5 min
Grocery Morton Williams 0.20 mi ~5 min
1331 1st Avenue, New York 10021
PH,Mo-Su 00:00-23:59
Grocery A Matter of Health 0.26 mi ~6 min
Hotel Ronald McDonald House New York 0.29 mi ~6 min
405 East 73rd Street
Hotel The Gardens Sonesta ES Suites 0.32 mi ~7 min
Hotel The Palladin 0.34 mi ~7 min
Parking Centerpark East 66th Street Parking Garage 0.37 mi ~8 min
168 East 66th Street, New York 10065
Mo-Su 06:00-00:00
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 |
|---|---|---|
| 308859 | NY | Medical Oncology Physician primary |
This provider holds licence 308859 issued in NY. 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 - Medical Oncology
- PAC ID
- 7315483112
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| New York | I20240729000258 | Practitioner - Medical Oncology |
| New Jersey | I20240913003108 | Practitioner - Medical Oncology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Medical Oncology. There are 2 separate enrolment records across 2 states (NY, NJ). 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 Medical Oncology covers
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer. NUCC Health Care Provider Taxonomy, code 207RX0202X
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 | |
|---|---|---|---|---|
| 207RX0202X | Medical Oncology Physician Medical Oncology | 308859 | NY | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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 | 1003313800 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 9, 2018 |
| Last updated | Mar 11, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MD |
| Practice address |
1275 YORK AVE New York, NY 10065 (347) 798-9213 |
| Mailing address |
379 WEST ST APT 5B New York, NY 10014 |
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 | 3 | 1 | 3 | 8 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 1 | 6 | 8 | 0 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.