Marvin Tam, M.D.
NPI 1174512032 · Diagnostic Radiology Physician · Mesa, AZ
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marvin Tam, M.D. is a Diagnostic Radiology Physician provider in Mesa, AZ (NPI 1174512032).
Provider details
- NPI number
- 1174512032
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 28319 (AZ)
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
20 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
3,686 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) |
|---|---|---|
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 388 | $37 |
| X-Ray of Chest, 1 View71045 | 342 | $8 |
| Mri Scan of Leg Joint Without Contrast73721 | 194 | $191 |
| Mri Scan of Brain Without Contrast70551 | 189 | $67 |
| Mri Scan of Arm Joint Without Contrast73221 | 180 | $195 |
| X-Ray of Chest, 2 Views71046 | 167 | $32 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 12 | 12 |
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)
- 1201 S Alma School RdSuite 14000Mesa, AZ 85210-2008Phone: (480) 545-8119Fax: (480) 892-6805
Registry dates
- Enumerated
- 2005-10-13
- Last updated
- 2019-02-11
Frequently asked questions
- What is Marvin Tam's NPI number?
- Marvin Tam's National Provider Identifier (NPI) is 1174512032, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marvin Tam's specialty?
- Marvin Tam is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marvin Tam located?
- Marvin Tam's practice location on file with NPPES is 6424 E Broadway Rd Ste 101, Mesa, AZ 85206-1750.
- What is Marvin Tam's phone number?
- The practice phone number listed in the NPPES registry for Marvin Tam is (480) 456-9000.
- Does Marvin Tam accept Medicare?
- Marvin Tam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marvin Tam's NPI active?
- Yes — Marvin Tam's NPI (1174512032) is active in the NPPES registry as of the last update on 2019-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.