Herminia Gumabay Herrera-Tan, M.D.
Internal Medicine Physician · Phoenix, AZ
Herminia Gumabay Herrera-Tan, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1295812774, issued on Nov 1, 2006. Check the license (Arizona 29828, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Herminia Gumabay Herrera-Tan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 29828 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 9515 W Camelback RD Ste 136, Phoenix, AZ 85037
- Phone
- (623) 322-8906
- Enumerated
- Nov 1, 2006
- Record last updated
- Feb 19, 2026
- Fax
- (623) 322-8430
- Medicare enrollment
- Enrolled (PECOS I20070315000233); 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 9515 W Camelback RD Ste 136
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Alfafara, FNP-CFamily Nurse Practitioner1104432756
- Sherry Montoya-Velasquez, FNPFamily Nurse Practitioner1366911059
Verify Herminia Gumabay Herrera-Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 29828Check 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 internal medicine physician in 2024
7,369 Medicare Part D claims for 572 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium527 claims
- Rosuvastatin Calcium383 claims
- Amlodipine Besylate296 claims
- Lisinopril292 claims
- Gabapentin274 claims
- Losartan Potassium271 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.
Industry payments in 2024: $115.25
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Centerwell Senior Primary Care AZ CS PCPhoenix, AZ
- Centerwell Senior Primary Care AZ PCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Herminia Gumabay Herrera-Tan among 2,853 internal medicine physician records in Arizona
Herminia Gumabay Herrera-Tan, 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1987 · median 2003 among the 1,643 with a school on file
- Record last updated2026 · 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
- Alicia Acevedo-Urcuyo, M.D.Phoenix, AZ 850371841226644
- Jason Brown, M.D.Phoenix, AZ 850371578672630
- Fernando Raul De Castro, MDPhoenix, AZ 850371184617979
- Anthony Dunnigan, M.D.Phoenix, AZ 850371710067210
- Lucia Gregorio, MDPhoenix, AZ 850371609856004
- Punnaiah Marella, MDPhoenix, AZ 850371407878523
- Henry Onyirimba, MDPhoenix, AZ 850371003876061
- Govinda Satapathy, MDPhoenix, AZ 850371043237837
Common questions
What is Herminia Gumabay Herrera-Tan, M.D.'s NPI number?
Herminia Gumabay Herrera-Tan, M.D.'s National Provider Identifier (NPI) is 1295812774, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Herminia Gumabay Herrera-Tan, M.D. located?
The NPPES record lists a practice address at 9515 W Camelback RD Ste 136, Phoenix, AZ, 85037. Phone: (623) 322-8906. Providers update this record themselves, so call before visiting.
How can I verify Herminia Gumabay Herrera-Tan, M.D.'s license?
NPPES lists Arizona license number 29828, 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 Herminia Gumabay Herrera-Tan, M.D. prescribe under Medicare Part D?
In 2024, Herminia Gumabay Herrera-Tan, M.D. had 7,369 Medicare Part D claims for 572 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.