Maria Andreevna Hwang, DO
Obstetrics & Gynecology Physician · Santa Maria, CA
Maria Andreevna Hwang, DO is an obstetrics & gynecology physician with a practice address in Santa Maria, California, and NPI 1235668849, issued on Jun 7, 2017. Check the license (California 20A18799, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maria Andreevna Hwang
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 20A18799 CA
OT017701 PA
Self-reported in NPPES; status is on the state search - Practice location
- 220 S Palisade Dr Ste 203, Santa Maria, CA 93454
- Phone
- (805) 354-7101
- Enumerated
- Jun 7, 2017
- Record last updated
- May 9, 2025
- Fax
- (805) 354-7102
- Medicare enrollment
- Enrolled (PECOS I20210721001962); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 220 S Palisade Dr Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mona Bazargan, D.O.Obstetrics & Gynecology Physician1437502499
- Taimur Chaudhry, MDObstetrics & Gynecology Physician1043355910
- Xinyue Chen, DOObstetrics & Gynecology Physician1356920557
- Aimee De Guzman, CNMAdvanced Practice Midwife1093512378
- Deena Elwan, M.D.Obstetrics & Gynecology Physician1588190227
- Jennifer GravesFamily Nurse Practitioner1639682057
Verify Maria Andreevna Hwang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
84 Medicare Part D claims for 27 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol31 claims
- Progesterone18 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Central Coast Health CentersSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Andreevna Hwang among 5,088 obstetrics & gynecology physician records in California
Maria Andreevna Hwang, DO 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 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 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).
39 obstetrics & gynecology physician records list a practice address in Santa Maria
They are 39 of the 3,047 NPPES records with a practice address in Santa Maria, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Santa Maria → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ilona Baran, MDSanta Maria, CA 934541487639290
- Tad Callahan, MDSanta Maria, CA 934541225112931
- Brian Crisp, M.D.Santa Maria, CA 934541861446262
- Keith Dillon, M.D.Santa Maria, CA 934541154407534
- Kenneth Fogelberg, M.D.Santa Maria, CA 934541801897764
- Carolyn Griffith, M.D.Santa Maria, CA 934541720009269
- Rebecca Jones, M.D.Santa Maria, CA 934541093823700
- Robert McGhie, M.D.Santa Maria, CA 934541730184367
Common questions
What is Maria Andreevna Hwang, DO's NPI number?
Maria Andreevna Hwang, DO's National Provider Identifier (NPI) is 1235668849, issued on Jun 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Maria Andreevna Hwang, DO located?
The NPPES record lists a practice address at 220 S Palisade Dr Ste 203, Santa Maria, CA, 93454. Phone: (805) 354-7101. Providers update this record themselves, so call before visiting.
How can I verify Maria Andreevna Hwang, DO's license?
NPPES lists California license number 20A18799, 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 Maria Andreevna Hwang, DO prescribe under Medicare Part D?
In 2024, Maria Andreevna Hwang, DO had 84 Medicare Part D claims for 27 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Maria Andreevna Hwang, DO's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.