Albert Roy Katz, M.D.
Rheumatology Physician · Tarzana, CA
Albert Roy Katz, M.D. is a rheumatology physician with a practice address in Tarzana, California, and NPI 1699737932, issued on Apr 3, 2006. Check the license (California G51433, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Albert Roy Katz
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G51433 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18345 Ventura Blvd, Suite 420, Tarzana, CA 91356
- Phone
- (818) 996-1888
- Enumerated
- Apr 3, 2006
- Record last updated
- Jul 2, 2024
- Fax
- (818) 996-7378
- Medicaid ID
- 00G514331 CA
- Medicare enrollment
- Enrolled (PECOS I20120412000721); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1978
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Verify Albert Roy Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average rheumatology physician in 2024
2,225 Medicare Part D claims for 229 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 60 claims were for opioids.
Most prescribed
- Meloxicam177 claims
- Gabapentin153 claims
- Methotrexate141 claims
- Prednisone137 claims
- Allopurinol82 claims
- Methylprednisolone77 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.
The MIPS final score for 2023 (Medicare payment program): 8.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $3,311.51
121 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Albert Roy Katz among 926 rheumatology physician records in California
Albert Roy Katz, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1978 · median 2003 among the 641 with a school on file
- Record last updated2024 · 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 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Tarzana → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Adam Kreitenberg, M.D.Tarzana, CA 913561770857682
- Jenny Oh, M.D.Tarzana, CA 913561386657856
- Boris Ratiner, M.D.Tarzana, CA 913561821001496
- Ramandeep Bains, M.D.Valencia, CA 913551215369319
- Catherine Finney, M.D.Valencia, CA 913551922263474
- Howard Van Gelder, MDValencia, CA 913551932343829
- Aelita Khachatrian, MDThousand Oaks, CA 913601306137476
- Elvira Lindwall, M.D.Thousand Oaks, CA 913601881890713
Common questions
What is Albert Roy Katz, M.D.'s NPI number?
Albert Roy Katz, M.D.'s National Provider Identifier (NPI) is 1699737932, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Albert Roy Katz, M.D. located?
The NPPES record lists a practice address at 18345 Ventura Blvd, Suite 420, Tarzana, CA, 91356. Phone: (818) 996-1888. Providers update this record themselves, so call before visiting.
How can I verify Albert Roy Katz, M.D.'s license?
NPPES lists California license number G51433, 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 Albert Roy Katz, M.D. prescribe under Medicare Part D?
In 2024, Albert Roy Katz, M.D. had 2,225 Medicare Part D claims for 229 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Albert Roy Katz, M.D.'s MIPS final score?
The 2023 MIPS final score is 8.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.