Changjin Seo, M.D.
NPI 1689986432 · Emergency Medicine Physician · Astoria, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Changjin Seo, M.D. is a Emergency Medicine Physician provider in Astoria, NY (NPI 1689986432).
Provider details
- NPI number
- 1689986432
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101253838 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 19 | 19 |
| Cefuroxime Axetilbrand: Cefuroxime | 15 | 15 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 14 | 13 |
| Azelastine Hcl | 12 | 12 |
| Ondansetronbrand: Ondansetron Odt | 12 | 12 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 | 11 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-09
- Last updated
- 2022-01-31
- Certified
- 2022-01-31
Frequently asked questions
- What is Changjin Seo's NPI number?
- Changjin Seo's National Provider Identifier (NPI) is 1689986432, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Changjin Seo's specialty?
- Changjin Seo is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Changjin Seo located?
- Changjin Seo's practice location on file with NPPES is 4502 Ditmars Blvd Apt 503, Astoria, NY 11105-1353.
- What is Changjin Seo's phone number?
- The practice phone number listed in the NPPES registry for Changjin Seo is (917) 478-7084.
- Does Changjin Seo accept Medicare?
- Changjin Seo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Changjin Seo's NPI active?
- Yes — Changjin Seo's NPI (1689986432) is active in the NPPES registry as of the last update on 2022-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.