NPPES file of Aug 9, 2026

Maureen Ellen Sims, M.D.

Neonatal-Perinatal Medicine Physician · Sylmar, CA

Maureen Ellen Sims, M.D. is a neonatal-perinatal medicine physician with a practice address in Sylmar, California, and NPI 1174666085, issued on Feb 14, 2007. Check the license (California G25663, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1174666085
Name
Maureen Ellen Sims
Credential
M.D.
Primary taxonomy
Neonatal-Perinatal Medicine Physician 2080N0001X
License number
G25663 CA
Self-reported in NPPES; status is on the state search
Practice location
14445 Olive View Dr, Sylmar, CA 91342
Phone
(818) 364-4473
Enumerated
Feb 14, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest neonatal-perinatal medicine physician records → All 871 in California → Look up another NPI →

Also registered at 14445 Olive View Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nasser Abdo, MDInternal Medicine Physician1306911649
  2. Gezman Abdullahi, M.D.Internal Medicine Physician1225394380
  3. Moyosore Abere, NPNurse Practitioner1225667314
  4. Ammini Abraham, MDAnesthesiology Physician1467531541
  5. Margarita Acosta, RN, AGACNPAcute Care Nurse Practitioner1609202415
  6. Fredric Adler, MDInternal Medicine Physician1356376735

Verify Maureen Ellen Sims in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G25663    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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Maureen Ellen Sims among 871 neonatal-perinatal medicine physician records in California

Maureen Ellen Sims, M.D. is one of 871 neonatal-perinatal medicine physician records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 48% of them.

  • NPI issued2007 · 48% of these records are older, 36% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · 7% of these records are
  • Record last updated2007 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080N0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neonatal-Perinatal Medicine Physician providers in California

There are 871 neonatal-perinatal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 871 in California → Every provider in Sylmar → Neonatal-Perinatal Medicine Physician nationwide →

The 8 neonatal-perinatal medicine physician records with the nearest ZIP codes

  1. Juanita Lewis, M.D.Sylmar, CA 913421790045540
  2. Jane Shay, M.D.Sylmar, CA 913421962601575
  3. Preet Shergill, MDSylmar, CA 913421255418604
  4. Stephen Elliott, MDMission Hills, CA 913451023127644
  5. Ramin Samadi, M.D.Valencia, CA 913551417970732
  6. Celia Alconcel, M.D.Tarzana, CA 913561982615654
  7. James Banks, MDTarzana, CA 913561245293232
  8. Scott Beasley, M.D.Tarzana, CA 913561710055272

Common questions

What is Maureen Ellen Sims, M.D.'s NPI number?

Maureen Ellen Sims, M.D.'s National Provider Identifier (NPI) is 1174666085, issued on Feb 14, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Maureen Ellen Sims, M.D. located?

The NPPES record lists a practice address at 14445 Olive View Dr, Sylmar, CA, 91342. Phone: (818) 364-4473. Providers update this record themselves, so call before visiting.

How can I verify Maureen Ellen Sims, M.D.'s license?

NPPES lists California license number G25663, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.