Frank Mahzari, MD
NPI 1841386125 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frank Mahzari, MD is a Internal Medicine Physician provider in Houston, TX (NPI 1841386125).
Provider details
- NPI number
- 1841386125
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L8817 (TX)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
237 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 70 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 69 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 67 | $174 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 31 | $79 |
Typical Medicare-allowed amounts for these services range $79–$174 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 44 | 16 |
| Carvedilol | 33 | — |
| Furosemide | 33 | 19 |
| Amlodipine Besylate | 31 | 12 |
| Atorvastatin Calcium | 31 | — |
| Levothyroxine Sodium | 28 | — |
| Apixabanbrand: Eliquis | 23 |
Practice location
Mailing address
Additional practice locations (1)
- 9900 Westpark Dr Ste 240Houston, TX 77063-5286Phone: (713) 677-0137
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2022-12-27
- Certified
- 2022-12-27
Frequently asked questions
- What is Frank Mahzari's NPI number?
- Frank Mahzari's National Provider Identifier (NPI) is 1841386125, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frank Mahzari's specialty?
- Frank Mahzari is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frank Mahzari located?
- Frank Mahzari's practice location on file with NPPES is 550 Post Oak Blvd Ste 411, Houston, TX 77027-9410.
- What is Frank Mahzari's phone number?
- The practice phone number listed in the NPPES registry for Frank Mahzari is (832) 669-0111.
- Does Frank Mahzari accept Medicare?
- Frank Mahzari is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frank Mahzari's NPI active?
- Yes — Frank Mahzari's NPI (1841386125) is active in the NPPES registry as of the last update on 2022-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.