Margaret Ann Baumbusch, MD, FACOG
Obstetrics & Gynecology Physician · New Haven, CT
Margaret Ann Baumbusch, MD, FACOG is an obstetrics & gynecology physician with a practice address in New Haven, Connecticut, and NPI 1225336134, issued on Mar 2, 2011. Check the license (Connecticut 51924, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Margaret Ann Baumbusch
- Credential
- MD, FACOG
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 51924 CT
A113503 CA
Self-reported in NPPES; status is on the state search - Practice location
- 40 Temple St., New Haven, CT 06510
- Phone
- (203) 789-2011
- Enumerated
- Mar 2, 2011
- Record last updated
- May 21, 2024
- Fax
- (203) 865-1708
- Medicare enrollment
- Enrolled (PECOS I20131118000463); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
Also registered at 40 Temple St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristen Becker-Talwalkar, C.N.M.Advanced Practice Midwife1699751099
Verify Margaret Ann Baumbusch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 51924Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
81 Medicare Part D claims for 41 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Estradiol20 claims
- Clobetasol Propionate11 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Ann Baumbusch among 707 obstetrics & gynecology physician records in Connecticut
Margaret Ann Baumbusch, MD, FACOG is one of 707 obstetrics & gynecology physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 69% of them.
- NPI issued2011 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2009 · median 2003 among the 488 with a school on file
- Record last updated2024 · 65% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 obstetrics & gynecology physician records list a practice address in New Haven
They are 86 of the 9,793 NPPES records with a practice address in New Haven, and 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in New Haven → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Steven Fleischman, M.D.New Haven, CT 065101265495790
- Thomas Hanson, M.D., FACOSNew Haven, CT 065101063475184
- Tessa Madden, MDNew Haven, CT 065101104861665
- Urania Magriples, MDNew Haven, CT 065101740263813
- Dennis Mauricio, MDNew Haven, CT 065101063675056
- Megan McCarthy, M.D.New Haven, CT 065101215228259
- Leanne McCloskey, M.D., M.P.H.New Haven, CT 065101700115029
- Mary Jane Minkin, M.D., FACOGNew Haven, CT 065101760445290
Common questions
What is Margaret Ann Baumbusch, MD, FACOG's NPI number?
Margaret Ann Baumbusch, MD, FACOG's National Provider Identifier (NPI) is 1225336134, issued on Mar 2, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Ann Baumbusch, MD, FACOG located?
The NPPES record lists a practice address at 40 Temple St., New Haven, CT, 06510. Phone: (203) 789-2011. Providers update this record themselves, so call before visiting.
How can I verify Margaret Ann Baumbusch, MD, FACOG's license?
NPPES lists Connecticut license number 51924, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Ann Baumbusch, MD, FACOG prescribe under Medicare Part D?
In 2024, Margaret Ann Baumbusch, MD, FACOG had 81 Medicare Part D claims for 41 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Margaret Ann Baumbusch, MD, FACOG's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.