Warren Morse Allen, M.D.
Cytopathology Physician · Santa Monica, CA
Warren Morse Allen, M.D. is a cytopathology physician with a practice address in Santa Monica, California, and NPI 1801850722, issued on Apr 17, 2006. Check the license (California G39548, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Warren Morse Allen
- Credential
- M.D.
- Primary taxonomy
- Cytopathology Physician 207ZC0500X
- License number
- G39548 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1328 22ND St, Santa Monica, CA 90404
- Phone
- (310) 829-8101
- Enumerated
- Apr 17, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (310) 829-6509
- Medicare enrollment
- Enrolled (PECOS I20040129001034); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest cytopathology physician records → All 75 in California → Look up another NPI →
Also registered at 1328 22ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gina Gabreski, PAMedical Physician Assistant1821032707
Verify Warren Morse Allen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G39548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 90.5 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: $34.02
2 payments; by number, the most common kind was food and beverage; the largest payer was Cepheid. The 73 providers of this specialty with any payment received $1,530.54 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 one group practice
- Pathology Medical Group OF Saint JohnsSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Warren Morse Allen among 75 cytopathology physician records in California
Warren Morse Allen, M.D. is one of 75 cytopathology physician records with a practice address in California. 52% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 33% newer
- In a Medicare fileYes · 52% of these records are
- In the CMS Doctors and Clinicians fileYes · 37% of these records are
- Graduated1978 · median 1996 among the 28 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZC0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cytopathology Physician providers in California
There are 75 cytopathology physician records in California.
All 75 in California → Every provider in Santa Monica → Cytopathology Physician nationwide →
The 8 cytopathology physician records with the nearest ZIP codes
- Laron McPhaul, M.D.Torrance, CA 905021386688695
- Rose Venegas, M.D.Torrance, CA 905021144376286
- Anila Guruji, M.D.Torrance, CA 905031912228214
- Mien Hardy, M.D.Inglewood, CA 903011588722144
- Inderjit Deol, MDCulver City, CA 902321649353574
- Suchetha Adiga, M.D.Rancho Dominguez, CA 902201003816893
- Sharon Hirschowitz, MDLos Angeles, CA 900951780612382
- Teresa Kim, MDLos Angeles, CA 900951447754353
Common questions
What is Warren Morse Allen, M.D.'s NPI number?
Warren Morse Allen, M.D.'s National Provider Identifier (NPI) is 1801850722, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren Morse Allen, M.D. located?
The NPPES record lists a practice address at 1328 22ND St, Santa Monica, CA, 90404. Phone: (310) 829-8101. Providers update this record themselves, so call before visiting.
How can I verify Warren Morse Allen, M.D.'s license?
NPPES lists California license number G39548, 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.
What is Warren Morse Allen, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.5 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.