NPPES file of Aug 9, 2026

Jenna A. Timm, MD

Pediatric Emergency Medicine (Emergency Medicine) Physician · Oakland, CA

Jenna A. Timm, MD is a pediatric emergency medicine (emergency medicine) physician with a practice address in Oakland, California, and NPI 1174527881, issued on Jun 9, 2005. Check the license (California A90933, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1174527881
Name
Jenna A. Timm
Credential
MD
Primary taxonomy
Pediatric Emergency Medicine (Emergency Medicine) Physician 207PP0204X
License number
A90933 CA
Self-reported in NPPES; status is on the state search
Practice location
275 W Macarthur Blvd, Oakland, CA 94611
Phone
(510) 752-1000
Enumerated
Jun 9, 2005
Record last updated
Jan 10, 2022
Medicare enrollment
Enrolled (PECOS I20050816000753); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 1999
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 275 W Macarthur Blvd

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

  1. David Aaronson, MDUrology Physician1215053129
  2. Paul-Andre Abboud, M.D.Emergency Medicine Physician1710065503
  3. Brittany Abeldt, MDPsychiatry Physician1982353884
  4. Bilal Abu-Alrub, DOStudent in an Organized Health Care Education/Training Program1609760768
  5. Walter Acuna, MDInternal Medicine Physician1972655108
  6. Brett Adams, MDStudent in an Organized Health Care Education/Training Program1841731098

Verify Jenna A. Timm in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A90933
    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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76% more Medicare Part D claims than the average pediatric emergency medicine (emergency medicine) physician in 2024

157 Medicare Part D claims for 92 beneficiaries, against an average of 89 among the 103 providers of this specialty who prescribed in Part D. 11 claims were for opioids.

  1. Jenna Timm157
  2. Specialty average89

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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncOakland, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jenna A. Timm among 78 pediatric emergency medicine (emergency medicine) physician records in California

Jenna A. Timm, MD is one of 78 pediatric emergency medicine (emergency medicine) physician records with a practice address in California. 47% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 95% newer
  • In a Medicare fileYes · 47% of these records are
  • In the CMS Doctors and Clinicians fileYes · 31% of these records are
  • Graduated1999 · median 2010 among the 24 with a school on file
  • Record last updated2022 · 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 207PP0204X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Emergency Medicine (Emergency Medicine) Physician providers in California

There are 78 pediatric emergency medicine (emergency medicine) physician records in California.

The 8 pediatric emergency medicine (emergency medicine) physician records with the nearest ZIP codes

  1. Peter Baker, MDOakland, CA 946091801967450
  2. Michael Bell, MDOakland, CA 946091891865689
  3. William Hawk, M.D.Oakland, CA 946091285676304
  4. Mahnoosh Nik-Ahd, MDOakland, CA 946091174919609
  5. Kevin Whitelaw, MDOakland, CA 946091902839699
  6. Zahra PiraniFremont, CA 945381013350529
  7. Henry Pollack, MDGreenbrae, CA 949041356357388
  8. Brittany Boswell, MDStanford, CA 943051083033575

Common questions

What is Jenna A. Timm, MD's NPI number?

Jenna A. Timm, MD's National Provider Identifier (NPI) is 1174527881, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Jenna A. Timm, MD located?

The NPPES record lists a practice address at 275 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-1000. Providers update this record themselves, so call before visiting.

How can I verify Jenna A. Timm, MD's license?

NPPES lists California license number A90933, 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 Jenna A. Timm, MD prescribe under Medicare Part D?

In 2024, Jenna A. Timm, MD had 157 Medicare Part D claims for 92 beneficiaries; the average among pediatric emergency medicine (emergency medicine) physician prescribers was 89. Part D covers Medicare prescriptions only.

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.