Nancy Serpa, MD
NPI 1649361353 · Family Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Serpa, MD is a Family Medicine Physician provider in Fremont, CA (NPI 1649361353).
Provider details
- NPI number
- 1649361353
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A84445 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
416 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 203 | $151 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 74 | $156 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 50 | $214 |
| Administration of Influenza Virus VaccineG0008 | 18 | $39 |
| Admn Sarscov2 Vacc 1 Dose90480 | 14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 66 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 212 | 64 |
| Losartan Potassium | 116 | 32 |
| Levothyroxine Sodium | 114 | 31 |
| Pantoprazole Sodium | 106 | 37 |
| Amlodipine Besylate | 96 | 32 |
| Lisinopril | 96 | 28 |
| Famotidine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-27
- Last updated
- 2020-05-20
- Certified
- 2020-05-20
Frequently asked questions
- What is Nancy Serpa's NPI number?
- Nancy Serpa's National Provider Identifier (NPI) is 1649361353, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Serpa's specialty?
- Nancy Serpa is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Serpa located?
- Nancy Serpa's practice location on file with NPPES is 3200 Kearney St, Fremont, CA 94538-2299.
- What is Nancy Serpa's phone number?
- The practice phone number listed in the NPPES registry for Nancy Serpa is (510) 490-1222.
- Does Nancy Serpa accept Medicare?
- Nancy Serpa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Serpa's NPI active?
- Yes — Nancy Serpa's NPI (1649361353) is active in the NPPES registry as of the last update on 2020-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.