Frederick S. Rosen, MD
Pediatric Otolaryngology Physician · Brentwood, CA
Frederick S. Rosen, MD is a pediatric otolaryngology physician with a practice address in Brentwood, California, and NPI 1063502839, issued on Oct 13, 2006. Check the license (California A84955, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frederick S. Rosen
- Credential
- MD
- Primary taxonomy
- Pediatric Otolaryngology Physician 207YP0228X
- License number
- A84955 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1181 Central Blvd Ste B, Brentwood, CA 94513
- Phone
- (925) 463-0336
- Enumerated
- Oct 13, 2006
- Record last updated
- Mar 19, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (925) 463-1387
- Medicare enrollment
- Enrolled (PECOS I20190911001650); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest pediatric otolaryngology physician records → All 77 in California → Look up another NPI →
Verify Frederick S. Rosen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84955Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 92% of the cost of the top drugs
91 Medicare Part D claims for 49 beneficiaries, against an average of 129 among the 135 providers of this specialty who prescribed in Part D. Brand-name drugs were 97% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Typhim Vi16 claims
- Shingrix15 claims
- Boostrix Tdap13 claims
- Abrysvo12 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.
Bills Medicare through one group practice
- County OF San Luis ObispoSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frederick S. Rosen among 77 pediatric otolaryngology physician records in California
Frederick S. Rosen, MD is one of 77 pediatric otolaryngology physician records with a practice address in California. 82% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 73% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated1999 · median 2005 among the 36 with a school on file
- Record last updated2015 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207YP0228X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Otolaryngology Physician providers in California
There are 77 pediatric otolaryngology physician records in California.
All 77 in California → Every provider in Brentwood → Pediatric Otolaryngology Physician nationwide →
The 8 pediatric otolaryngology physician records with the nearest ZIP codes
- Robert Wesman, M.D.Oakland, CA 946091487647244
- Iram Ahmad, MDPalo Alto, CA 943041316174014
- Nada Ali, MDPalo Alto, CA 943041346605573
- Karthik Balakrishnan, MD, MPHPalo Alto, CA 943041528070844
- Andrew Birkeland, M.D.Palo Alto, CA 943041700149317
- Kay Chang, MDPalo Alto, CA 943041649318577
- Taseer Din, MDPalo Alto, CA 943041346813979
- Grace Kim, MDPalo Alto, CA 943041578963021
Common questions
What is Frederick S. Rosen, MD's NPI number?
Frederick S. Rosen, MD's National Provider Identifier (NPI) is 1063502839, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick S. Rosen, MD located?
The NPPES record lists a practice address at 1181 Central Blvd Ste B, Brentwood, CA, 94513. Phone: (925) 463-0336. Providers update this record themselves, so call before visiting.
How can I verify Frederick S. Rosen, MD's license?
NPPES lists California license number A84955, 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 Frederick S. Rosen, MD prescribe under Medicare Part D?
In 2024, Frederick S. Rosen, MD had 91 Medicare Part D claims for 49 beneficiaries; the average among pediatric otolaryngology physician prescribers was 129. 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.