Connie Chan, M.D.
NPI 1477738144 · Emergency Medicine Physician · Gaithersburg, MD
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Connie Chan, M.D. is a Emergency Medicine Physician provider in Gaithersburg, MD (NPI 1477738144).
Provider details
- NPI number
- 1477738144
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A111937 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 51 | 51 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | 16 |
| Doxycycline Monohydrate | 13 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude 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 no Part D record, 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
Additional practice locations (1)
- 3288 Moanalua RdDepartment of Emergency MedicineHonolulu, HI 96819-1469Phone: (808) 432-7030
Registry dates
- Enumerated
- 2007-12-31
- Last updated
- 2021-06-01
- Certified
- 2021-06-01
Frequently asked questions
- What is Connie Chan's NPI number?
- Connie Chan's National Provider Identifier (NPI) is 1477738144, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Connie Chan's specialty?
- Connie Chan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Connie Chan located?
- Connie Chan's practice location on file with NPPES is 655 Watkins Mill Rd, Gaithersburg, MD 20879-3301.
- What is Connie Chan's phone number?
- The practice phone number listed in the NPPES registry for Connie Chan is (240) 632-4224.
- Does Connie Chan accept Medicare?
- Connie Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Connie Chan's NPI active?
- Yes — Connie Chan's NPI (1477738144) is active in the NPPES registry as of the last update on 2021-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.