William Martz, M.D.
NPI 1215950027 · Family Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Martz, M.D. is a Family Medicine Physician provider in Phoenix, AZ (NPI 1215950027).
Provider details
- NPI number
- 1215950027
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 1484 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
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
2,579 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 Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,451 | $96 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 343 | $27 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 257 | $105 |
| Advance Care Planning, First 30 Minutes99497 | 229 | $67 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 126 | $162 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 48 | 12 |
| Metoprolol Tartrate | 42 | 13 |
| Levothyroxine Sodium | 40 | 15 |
| Amlodipine Besylate | 32 | 11 |
| Furosemide | 31 | — |
| Lisinopril | 28 | 12 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-25
- Last updated
- 2016-06-03
Frequently asked questions
- What is William Martz's NPI number?
- William Martz's National Provider Identifier (NPI) is 1215950027, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Martz's specialty?
- William Martz is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Martz located?
- William Martz's practice location on file with NPPES is 3003 N Central Ave, Phoenix, AZ 85012-2902.
- What is William Martz's phone number?
- The practice phone number listed in the NPPES registry for William Martz is (520) 260-0937.
- Does William Martz accept Medicare?
- William Martz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Martz's NPI active?
- Yes — William Martz's NPI (1215950027) is active in the NPPES registry as of the last update on 2016-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.