Hanh Ngan Hoang, M.D.
Obstetrics & Gynecology Physician · Milpitas, CA
Hanh Ngan Hoang, M.D. is an obstetrics & gynecology physician with a practice address in Milpitas, California, and NPI 1093941973, issued on Jun 4, 2009. Check the license (California A115323, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hanh Ngan Hoang
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A115323 CA
Self-reported in NPPES; status is on the state search - Practice location
- 445 Marylinn Dr, Milpitas, CA 95035
- Phone
- (408) 930-1719
- Enumerated
- Jun 4, 2009
- Record last updated
- Apr 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Hanh Ngan Hoang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A115323Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
33 Medicare Part D claims for 13 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Triamcinolone Acetonide11 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: $284.97
19 payments; by number, the most common kind was food and beverage; the largest payer was Mayne Pharma Commercial LLC. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Hanh Ngan Hoang among 5,088 obstetrics & gynecology physician records in California
Hanh Ngan Hoang, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2015 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 obstetrics & gynecology physician records list a practice address in Milpitas
They are 9 of the 878 NPPES records with a practice address in Milpitas, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Milpitas → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Katherine Brubaker, MDMilpitas, CA 950351376620211
- Melanie De Guzman, MDMilpitas, CA 950351306918057
- Danna Doering, MDMilpitas, CA 950351336226265
- Chanan Duong, MDMilpitas, CA 950351003379702
- Rita Freimuth, M.D.Milpitas, CA 950351700951423
- I-Ching Gong, MDMilpitas, CA 950351831276765
- Janelle Ogura, MDMilpitas, CA 950351083786883
- Diem Truong, MDMilpitas, CA 950351356428296
Common questions
What is Hanh Ngan Hoang, M.D.'s NPI number?
Hanh Ngan Hoang, M.D.'s National Provider Identifier (NPI) is 1093941973, issued on Jun 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Hanh Ngan Hoang, M.D. located?
The NPPES record lists a practice address at 445 Marylinn Dr, Milpitas, CA, 95035. Phone: (408) 930-1719. Providers update this record themselves, so call before visiting.
How can I verify Hanh Ngan Hoang, M.D.'s license?
NPPES lists California license number A115323, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Hanh Ngan Hoang, M.D. prescribe under Medicare Part D?
In 2024, Hanh Ngan Hoang, M.D. had 33 Medicare Part D claims for 13 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.