Clayton Timothy Pierce
Family Medicine Physician · Phoenix, AZ
Clayton Timothy Pierce is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1235691593, issued on Apr 4, 2019. Check the license (Arizona R77617, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Clayton Timothy Pierce
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- R77617 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1300 N 12TH St Ste 605, Phoenix, AZ 85006
- Phone
- (602) 839-4567
- Enumerated
- Apr 4, 2019
- Record last updated
- Jun 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (602) 839-2067
- Medicare enrollment
- Enrolled (PECOS I20230119001978); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 1300 N 12TH St Ste 605
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lara Aguiar, MDStudent in an Organized Health Care Education/Training Program1972305878
- Natalie AlteriStudent in an Organized Health Care Education/Training Program1770334880
- Christopher Alvarez, MDStudent in an Organized Health Care Education/Training Program1598405037
- Ryan AnayaStudent in an Organized Health Care Education/Training Program1578292314
- Gayane Archer, MDPsychiatry Physician1598414484
- Mitchell Baker, MDStudent in an Organized Health Care Education/Training Program1831993484
Verify Clayton Timothy Pierce in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license R77617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,142 Medicare Part D claims for 720 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 202 claims were for opioids.
Most prescribed
- Atorvastatin Calcium360 claims
- Levothyroxine Sodium313 claims
- Lisinopril271 claims
- Metformin Hcl263 claims
- Losartan Potassium232 claims
- Amlodipine Besylate213 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 practice group's MIPS final score for 2023 (Medicare payment program): 81.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Tucson Physician Group Holdings LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clayton Timothy Pierce among 3,119 family medicine physician records in Arizona
Clayton Timothy Pierce 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 2019, is newer than 83% of them.
- NPI issued2019 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2019 · median 2006 among the 1,775 with a school on file
- Record last updated2019 · 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 →
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- William Holland, M.D.Phoenix, AZ 850061831192590
- Cheryl Leigh, FNPPhoenix, AZ 850061235133877
- Dean Martin, MDPhoenix, AZ 850061871573204
Common questions
What is Clayton Timothy Pierce's NPI number?
Clayton Timothy Pierce's National Provider Identifier (NPI) is 1235691593, issued on Apr 4, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Clayton Timothy Pierce located?
The NPPES record lists a practice address at 1300 N 12TH St Ste 605, Phoenix, AZ, 85006. Phone: (602) 839-4567. Providers update this record themselves, so call before visiting.
How can I verify Clayton Timothy Pierce's license?
NPPES lists Arizona license number R77617, 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 Clayton Timothy Pierce prescribe under Medicare Part D?
In 2024, Clayton Timothy Pierce had 8,142 Medicare Part D claims for 720 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Clayton Timothy Pierce's MIPS final score?
The 2023 MIPS final score is 81.9 of 100, reported for the practice group. 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.