Colleen Elizabeth Mullin, M.D.
Obstetrics & Gynecology Physician · La Jolla, CA
Colleen Elizabeth Mullin, M.D. is an obstetrics & gynecology physician with a practice address in La Jolla, California, and NPI 1699970418, issued on Jun 20, 2007. Check the license (California A135501, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Colleen Elizabeth Mullin
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A135501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9850 Genesee Ave Ste 820, La Jolla, CA 92037
- Phone
- (858) 677-0777
- Enumerated
- Jun 20, 2007
- Record last updated
- Jul 7, 2026
- Medicare enrollment
- Enrolled (PECOS I20160106000538); may accept Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 9850 Genesee Ave Ste 820
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kasey Fontaine, PA-CPhysician Assistant1164044731
- Angela Hoefke, NPFamily Nurse Practitioner1063012060
- Quyen Kelly, MDObstetrics & Gynecology Physician1356920367
- Audrey Lunde, MDObstetrics & Gynecology Physician1851040349
- Brooke O'Neill, PA-CObstetrics & Gynecology Physician1851037006
- Robert Wagner, M.D.Pain Medicine (Anesthesiology) Physician1720094055
Verify Colleen Elizabeth Mullin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A135501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
62 Medicare Part D claims for 23 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Estradiol17 claims
- Progesterone14 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): 77.2 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).
Industry payments in 2024: $161.13
4 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, 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.
Bills Medicare through 2 group practices
- Portercare Adventist Health SystemLouisville, CO
- San Diego Womens Health IncLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colleen Elizabeth Mullin among 5,088 obstetrics & gynecology physician records in California
Colleen Elizabeth Mullin, 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2007 · median 2004 among the 2,700 with a school on file
- Record last updated2026 · 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).
68 obstetrics & gynecology physician records list a practice address in La Jolla
They are 68 of the 3,648 NPPES records with a practice address in La Jolla, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in La Jolla → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Timothy Bilash, M.D., M.S.La Jolla, CA 920371437189545
- Seth Bulow, M.D.La Jolla, CA 920371174635320
- Chrysten Cunningham, DOLa Jolla, CA 920371265435606
- Pamela Deak, M.D.La Jolla, CA 920371316978554
- Maureen Farrell, M.D.La Jolla, CA 920371508842303
- Robert Gordon, M.D.La Jolla, CA 920371619944030
- Pratima Gupta, MDLa Jolla, CA 920371891749842
- Patrick Haggerty, MDLa Jolla, CA 920371245280841
Common questions
What is Colleen Elizabeth Mullin, M.D.'s NPI number?
Colleen Elizabeth Mullin, M.D.'s National Provider Identifier (NPI) is 1699970418, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Colleen Elizabeth Mullin, M.D. located?
The NPPES record lists a practice address at 9850 Genesee Ave Ste 820, La Jolla, CA, 92037. Phone: (858) 677-0777. Providers update this record themselves, so call before visiting.
How can I verify Colleen Elizabeth Mullin, M.D.'s license?
NPPES lists California license number A135501, 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 Colleen Elizabeth Mullin, M.D. prescribe under Medicare Part D?
In 2024, Colleen Elizabeth Mullin, M.D. had 62 Medicare Part D claims for 23 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Colleen Elizabeth Mullin, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.2 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.