William D. Martz, M.D.
Family Medicine Physician · Phoenix, AZ
William D. Martz, M.D. is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1215950027, issued on Jul 25, 2006. Check the license (Arizona 23543, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- William D. Martz
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 23543 AZ
1484 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3003 N Central Ave, Phoenix, AZ 85012
- Phone
- (520) 260-0937
- Enumerated
- Jul 25, 2006
- Record last updated
- Jun 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 347931 AZ
- Medicare enrollment
- Enrolled (PECOS I20050502001282); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 3003 N Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Adair, LPCProfessional Counselor1245474295
- Jeanne Anderson, F.N.P.Family Nurse Practitioner1962559062
- Ann Billing, N.P.Gerontology Nurse Practitioner1700942851
- Audrey Bressor, NPAdult Health Nurse Practitioner1942347554
- Nancy Broerman, ANPAdult Health Nurse Practitioner1962551564
- Scott Burnside, N.P.P.Psychiatric/Mental Health Nurse Practitioner1659683878
Verify William D. Martz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 23543Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average family medicine physician in 2024
942 Medicare Part D claims for 111 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Eliquis48 claims
- Metoprolol Tartrate42 claims
- Levothyroxine Sodium40 claims
- Amlodipine Besylate32 claims
- Furosemide31 claims
- Lisinopril28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Grace Medical Group LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William D. Martz among 3,119 family medicine physician records in Arizona
William D. Martz, M.D. is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1994 · median 2006 among the 1,775 with a school on file
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
649 family medicine physician records list a practice address in Phoenix
They are 649 of the 31,399 NPPES records with a practice address in Phoenix, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Phoenix → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kathleen Brite, M.D.Phoenix, AZ 850121356548226
- Nicole Carter, MDPhoenix, AZ 850121568575512
- Edward Cipolla, DOPhoenix, AZ 850121144374281
- Jessica Holmes, M.D.Phoenix, AZ 850121093038242
- Luis Lopez, M.D.Phoenix, AZ 850121821148917
- Vafa Matin, DOPhoenix, AZ 850121184695371
- Kenneth Merchant, M.D.Phoenix, AZ 850121669621546
- James Newbern, D.O.Phoenix, AZ 850121942216924
Common questions
What is William D. Martz, M.D.'s NPI number?
William D. Martz, M.D.'s National Provider Identifier (NPI) is 1215950027, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William D. Martz, M.D. located?
The NPPES record lists a practice address at 3003 N Central Ave, Phoenix, AZ, 85012. Phone: (520) 260-0937. Providers update this record themselves, so call before visiting.
How can I verify William D. Martz, M.D.'s license?
NPPES lists Arizona license number 23543, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William D. Martz, M.D. prescribe under Medicare Part D?
In 2024, William D. Martz, M.D. had 942 Medicare Part D claims for 111 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is William D. Martz, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.