NPPES file of Aug 9, 2026

Karen Lynn Josephson, M.D.

Geriatric Medicine (Internal Medicine) Physician · Long Beach, CA

Karen Lynn Josephson, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Long Beach, California, and NPI 1356316129, issued on Feb 23, 2006. Check the license (California A52102, 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
1356316129
Name
Karen Lynn Josephson
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
A52102 CA
Self-reported in NPPES; status is on the state search
Practice location
8000 E Bynum St, Long Beach, CA 90808
Phone
(323) 309-0961
Enumerated
Feb 23, 2006
Record last updated
May 3, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(562) 795-5965
Medicaid ID
008521020 CA
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 geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →

Verify Karen Lynn Josephson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A52102    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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97% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

136 Medicare Part D claims, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Karen Josephson136
  2. Specialty average4,246

Most prescribed

  1. Sertraline Hcl12 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.

Karen Lynn Josephson among 532 geriatric medicine (internal medicine) physician records in California

Karen Lynn Josephson, M.D. is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 46% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 51% of these records are
  • Record last updated2013 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in California

There are 532 geriatric medicine (internal medicine) physician records in California.

All 532 in California → Every provider in Long Beach → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Andrew Ralston, M.D.Long Beach, CA 908061295793404
  2. Timothy Schwab, M.D.Long Beach, CA 908061174885248
  3. Mark Levinstein, M.D.Long Beach, CA 908221649387325
  4. Richard Nghiem, M.D.Long Beach, CA 908221033121280
  5. San San Wong-Lee, M.DLong Beach, CA 908221164538344
  6. Ellen Dayon, MDSeal Beach, CA 907401043279359
  7. Prakash Narain, MDSeal Beach, CA 907401699777292
  8. Mary Sherman, MDSeal Beach, CA 907401083674709

Common questions

What is Karen Lynn Josephson, M.D.'s NPI number?

Karen Lynn Josephson, M.D.'s National Provider Identifier (NPI) is 1356316129, issued on Feb 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karen Lynn Josephson, M.D. located?

The NPPES record lists a practice address at 8000 E Bynum St, Long Beach, CA, 90808. Phone: (323) 309-0961. Providers update this record themselves, so call before visiting.

How can I verify Karen Lynn Josephson, M.D.'s license?

NPPES lists California license number A52102, 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 Karen Lynn Josephson, M.D. prescribe under Medicare Part D?

In 2024, Karen Lynn Josephson, M.D. had 136 Medicare Part D claims; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.

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.