Glenda Gayle Williams, M.D.
Internal Medicine Physician · Phoenix, AZ
Glenda Gayle Williams, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1639379605, issued on Jul 19, 2007. Check the license (Arizona 81250, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Glenda Gayle Williams
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 81250 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 8913 N 19TH Ave, Phoenix, AZ 85021
- Phone
- (602) 858-4361
- Enumerated
- Jul 19, 2007
- Record last updated
- Jan 19, 2023
- Medicare enrollment
- Enrolled (PECOS I20121023000050); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 8913 N 19TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christina Summers, FNP-CFamily Nurse Practitioner1821319872
Verify Glenda Gayle Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 81250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,520 Medicare Part D claims for 309 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium162 claims
- Losartan Potassium149 claims
- Rosuvastatin Calcium96 claims
- Levothyroxine Sodium86 claims
- Amlodipine Besylate71 claims
- Tamsulosin Hcl67 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.
Bills Medicare through one group practice
- Banner Primary Care Physicians Arizona LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Glenda Gayle Williams among 2,853 internal medicine physician records in Arizona
Glenda Gayle Williams, M.D. is one of 2,853 internal 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 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 47% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2007 · median 2003 among the 1,643 with a school on file
- Record last updated2023 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Albert Asendorf, MDPhoenix, AZ 850211598960338
- Irvin Belzer, MDPhoenix, AZ 850211063450344
- Randolph Clark, M.D.Phoenix, AZ 850211568456036
- Keith Cunningham, MDPhoenix, AZ 850211285796185
- Charles Deakins, M.D.Phoenix, AZ 850211669658670
- Alvin Goldansky, MDPhoenix, AZ 850211104846914
- Darcie Groeper, D.O.Phoenix, AZ 850211407841166
- Theresa Hensler, M.D.Phoenix, AZ 850211386761484
Common questions
What is Glenda Gayle Williams, M.D.'s NPI number?
Glenda Gayle Williams, M.D.'s National Provider Identifier (NPI) is 1639379605, issued on Jul 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Glenda Gayle Williams, M.D. located?
The NPPES record lists a practice address at 8913 N 19TH Ave, Phoenix, AZ, 85021. Phone: (602) 858-4361. Providers update this record themselves, so call before visiting.
How can I verify Glenda Gayle Williams, M.D.'s license?
NPPES lists Arizona license number 81250, 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 Glenda Gayle Williams, M.D. prescribe under Medicare Part D?
In 2024, Glenda Gayle Williams, M.D. had 2,520 Medicare Part D claims for 309 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.