William I. Han, M.D.
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician · Fountain Valley, CA
William I. Han, M.D. is a urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician with a practice address in Fountain Valley, California, and NPI 1043300114, issued on Oct 12, 2006. Check the license (California A38218, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William I. Han
- Credential
- M.D.
- Primary taxonomy
- Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician 207VF0040X
- License number
- A38218 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17150 Euclid St Ste 220, Fountain Valley, CA 92708
- Phone
- (714) 444-3030
- Enumerated
- Oct 12, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (949) 419-2515
- Medicaid ID
- 00A382180 CA
- Medicare enrollment
- Enrolled (PECOS I20080515000307); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician records → All 108 in California → Look up another NPI →
Verify William I. Han in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A38218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician in 2024
236 Medicare Part D claims for 80 beneficiaries, against an average of 732 among the 998 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Oxybutynin Chloride53 claims
- Nitrofurantoin Mono-Macro41 claims
- Ciprofloxacin Hcl29 claims
- Tolterodine Tartrate Er27 claims
- Bethanechol Chloride26 claims
- Estradiol22 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.
William I. Han among 108 urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician records in California
William I. Han, M.D. is one of 108 urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician records with a practice address in California. 96% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 67% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1975 · median 2004 among the 89 with a school on file
- Record last updated2022 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VF0040X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician providers in California
There are 108 urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician records in California.
All 108 in California → Every provider in Fountain Valley → Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician nationwide →
The 8 urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician records with the nearest ZIP codes
- Sam Hessami, MDSanta Ana, CA 927041831167162
- Christine Horton, MDMission Viejo, CA 926911679899629
- Patricia Wallace, MDMission Viejo, CA 926911629162995
- Lance Betson, DONewport Beach, CA 926631497834964
- Matthew Clark, M.D.Newport Beach, CA 926631952417339
- Gail Hebel, M.D.Newport Beach, CA 926601003230673
- Sadikah Behbehani, MDCosta Mesa, CA 926271063937092
- Neha Sudol, MDAnaheim, CA 928061891055075
Common questions
What is William I. Han, M.D.'s NPI number?
William I. Han, M.D.'s National Provider Identifier (NPI) is 1043300114, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William I. Han, M.D. located?
The NPPES record lists a practice address at 17150 Euclid St Ste 220, Fountain Valley, CA, 92708. Phone: (714) 444-3030. Providers update this record themselves, so call before visiting.
How can I verify William I. Han, M.D.'s license?
NPPES lists California license number A38218, 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 William I. Han, M.D. prescribe under Medicare Part D?
In 2024, William I. Han, M.D. had 236 Medicare Part D claims for 80 beneficiaries; the average among urogynecology and reconstructive pelvic surgery (obstetrics & gynecology) physician prescribers was 732. 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.