Hai-Yen Nguyen, MD
Obstetrics & Gynecology Physician · Allentown, PA
Hai-Yen Nguyen, MD is an obstetrics & gynecology physician with a practice address in Allentown, Pennsylvania, and NPI 1376770370, issued on Jun 17, 2009. Check the license (Pennsylvania MD449143, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Hai-Yen Nguyen
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- MD449143 PA
MT195815 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1611 Pond RD, Allentown, PA 18104
- Phone
- (610) 398-7700
- Enumerated
- Jun 17, 2009
- Record last updated
- Oct 21, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (610) 398-6917
- Medicare enrollment
- Enrolled (PECOS I20131021001297); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 2009
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 1611 Pond RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephen Alvarado, M.D.Pediatrics Physician1255330999
- Lisa Baker-Vaughn, MDObstetrics & Gynecology Physician1073627774
- Courtney Boyle, DOObstetrics & Gynecology Physician1578882114
- Emily Brophy, MDObstetrics & Gynecology Physician1922475417
- Lisa Bunin, MDOphthalmology Physician1154397875
- Colleen Cooper, MDPediatric Adolescent Medicine Physician1154316651
Verify Hai-Yen Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD449143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
189 Medicare Part D claims for 87 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Estradiol23 claims
- Clobetasol Propionate15 claims
- Metronidazole13 claims
- 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.
Bills Medicare through one group practice
- Lehigh Valley Physician GroupTrexlertown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hai-Yen Nguyen among 1,974 obstetrics & gynecology physician records in Pennsylvania
Hai-Yen Nguyen, MD is one of 1,974 obstetrics & gynecology physician records with a practice address in Pennsylvania. 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 2009, is newer than 55% of them.
- NPI issued2009 · 55% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · median 2007 among the 1,176 with a school on file
- Record last updated2014 · 58% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
98 obstetrics & gynecology physician records list a practice address in Allentown
They are 98 of the 5,904 NPPES records with a practice address in Allentown, and 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Allentown → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Lisa Baker-Vaughn, MDAllentown, PA 181041073627774
- Alexandria George, DOAllentown, PA 181041417995788
- Tirun Gopal, MDAllentown, PA 181041891722211
- Mary Greiss-Coult, D.O.Allentown, PA 181041811006646
- Earl Jefferis, MDAllentown, PA 181041568576288
- Kailash Makhija, MDAllentown, PA 181041972579076
- Annmarie McDermott, M.D.Allentown, PA 181041821090218
- Thuy Ngo, M.D.Allentown, PA 181041467431023
Common questions
What is Hai-Yen Nguyen, MD's NPI number?
Hai-Yen Nguyen, MD's National Provider Identifier (NPI) is 1376770370, issued on Jun 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Hai-Yen Nguyen, MD located?
The NPPES record lists a practice address at 1611 Pond RD, Allentown, PA, 18104. Phone: (610) 398-7700. Providers update this record themselves, so call before visiting.
How can I verify Hai-Yen Nguyen, MD's license?
NPPES lists Pennsylvania license number MD449143, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Hai-Yen Nguyen, MD prescribe under Medicare Part D?
In 2024, Hai-Yen Nguyen, MD had 189 Medicare Part D claims for 87 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.