Mahsa Rezaei, MD
NPI 1457731747 · Family Medicine Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mahsa Rezaei, MD is a Family Medicine Physician provider in Fountain Valley, CA (NPI 1457731747).
Provider details
- NPI number
- 1457731747
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A146947 (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
11 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
77 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 34 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 18 | $138 |
Typical Medicare-allowed amounts for these services range $6–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 104 | 35 |
| Alendronate Sodium | 45 | 14 |
| Levothyroxine Sodium | 36 | 13 |
| Amlodipine Besylate | 32 | 13 |
| Losartan Potassium | 31 | 12 |
| Lisinopril | 27 | 13 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-02
- Last updated
- 2019-01-31
Frequently asked questions
- What is Mahsa Rezaei's NPI number?
- Mahsa Rezaei's National Provider Identifier (NPI) is 1457731747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mahsa Rezaei's specialty?
- Mahsa Rezaei is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mahsa Rezaei located?
- Mahsa Rezaei's practice location on file with NPPES is 11420 Warner Ave, Fountain Valley, CA 92708-2529.
- What is Mahsa Rezaei's phone number?
- The practice phone number listed in the NPPES registry for Mahsa Rezaei is (714) 549-1300.
- Does Mahsa Rezaei accept Medicare?
- Mahsa Rezaei is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mahsa Rezaei's NPI active?
- Yes — Mahsa Rezaei's NPI (1457731747) is active in the NPPES registry as of the last update on 2019-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.