Maryam Haghnegahdar, MD
NPI 1992278949 · Internal Medicine Physician · La Habra, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maryam Haghnegahdar, MD is a Internal Medicine Physician provider in La Habra, CA (NPI 1992278949).
Provider details
- NPI number
- 1992278949
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
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 tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 68 | 29 |
| Amlodipine Besylate | 39 | 15 |
| Metformin Hcl | 37 | 16 |
| Lisinopril | 32 | 12 |
| Losartan Potassium | 32 | 13 |
| Levothyroxine Sodium | 25 | — |
| Glipizide | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-01-02
- Last updated
- 2022-07-14
- Certified
- 2022-07-14
Frequently asked questions
- What is Maryam Haghnegahdar's NPI number?
- Maryam Haghnegahdar's National Provider Identifier (NPI) is 1992278949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryam Haghnegahdar's specialty?
- Maryam Haghnegahdar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maryam Haghnegahdar located?
- Maryam Haghnegahdar's practice location on file with NPPES is 501 S Idaho St Ste 260, La Habra, CA 90631-6594.
- What is Maryam Haghnegahdar's phone number?
- The practice phone number listed in the NPPES registry for Maryam Haghnegahdar is (562) 690-0400.
- Does Maryam Haghnegahdar accept Medicare?
- Maryam Haghnegahdar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maryam Haghnegahdar's NPI active?
- Yes — Maryam Haghnegahdar's NPI (1992278949) is active in the NPPES registry as of the last update on 2022-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.