Registry data as of Aug 27, 2026

Carl Blau, M.D.

Specialist · Encino, CA

Carl Blau, M.D. is a specialist with a practice address in Encino, California, and NPI 1598774259, issued on Aug 5, 2006. Check the license (California A23803, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1598774259
Name
Carl Blau
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
A23803 CA
Self-reported in NPPES; status is on the state search
Practice location
5400 Balboa Blvd, Encino, CA 91316
Phone
(818) 886-6848
Enumerated
Aug 5, 2006
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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Also registered at 5400 Balboa Blvd

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

  1. David Astrachan, D.D.S.Dentist1881693448
  2. Daniel Azani, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1417090473
  3. Timothy Casarez, MDPediatric Cardiology Physician1992782148
  4. Robert Collins, M.D.Internal Medicine Physician1669671350
  5. Tracey Cooperstein, DMDGeneral Practice Dentistry1518190248
  6. Niloufar Ehya, M.D.Anesthesiology Physician1942226345

Verify Carl Blau in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A23803
    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
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

98% fewer Medicare Part D claims than the average specialist in 2024

25 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.

  1. Carl Blau25
  2. Specialty average1,380

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.

27 specialist records list a practice address in Encino

They are 27 of the 3,136 NPPES records with a practice address in Encino, and 5,749 specialist records in California.

Other specialist records in California

  1. Fatemeh Abbasi, PTVan Nuys, CA1558496760
  2. Erlinda Abcede, M.D.Cudahy, CA1831228675
  3. Maher Abdallah, M.D.Palm Springs, CA1205988011
  4. Farinaz AbdiSan Marcos, CA1063153963
  5. Mai Abe, LESanta Monica, CA1609405158
  6. Hamid Abedi, HEARING AID SPECIALISan Diego, CA1659410744
  7. Jonas AbellaSan Francisco, CA1679760938
  8. Shreedhar Abhyankar, M.D.Indio, CA1861530669
  9. Elaine AbichRiverside, CA1780458927
  10. Mussarat Abidi, MDLadera Ranch, CA1053307769

Common questions

What is Carl Blau, M.D.'s NPI number?

Carl Blau, M.D.'s National Provider Identifier (NPI) is 1598774259, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Carl Blau, M.D. located?

The NPPES record lists a practice address at 5400 Balboa Blvd, Encino, CA, 91316. Phone: (818) 886-6848. Providers update this record themselves, so call before visiting.

How can I verify Carl Blau, M.D.'s license?

NPPES lists California license number A23803, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Carl Blau, M.D. prescribe under Medicare Part D?

In 2024, Carl Blau, M.D. had 25 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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) 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 27, 2026.