NPPES file of Aug 9, 2026

Michael P. Rubinstein, M.D.

Orthopaedic Hand Surgery Physician · Fullerton, CA

Michael P. Rubinstein, M.D. is an orthopaedic hand surgery physician with a practice address in Fullerton, California, and NPI 1780620013, issued on Jun 22, 2006. Check the license (California G58799, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780620013
Name
Michael P. Rubinstein
Credential
M.D.
Primary taxonomy
Orthopaedic Hand Surgery Physician 207XS0106X
License number
G58799 CA
Self-reported in NPPES; status is on the state search
Practice location
680 Langsdorf Dr, Fullerton, CA 92831
Phone
(714) 879-0050
Enumerated
Jun 22, 2006
Record last updated
May 6, 2025
Fax
(714) 879-0249
Medicare enrollment
Enrolled (PECOS I20040324001882); accepts Medicare assignment
Medical or professional school
New York Medical College, 1982
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 680 Langsdorf Dr

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

  1. Stephanie BautistaStudent in an Organized Health Care Education/Training Program1144764077
  2. Gray Brown, L.C.S.W.Clinical Social Worker1306928569
  3. Ronald Carlson, PSY DClinical Psychologist1841206075
  4. Myles CohenMarriage & Family Therapist1205585429
  5. Kenneth Cooper, DCChiropractor1912114174
  6. Ronald Cunningham, MPTPhysical Therapist1124115407

Verify Michael P. Rubinstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G58799
    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

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

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91% fewer Medicare Part D claims than the average orthopaedic hand surgery physician in 2024

17 Medicare Part D claims, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Michael Rubinstein17
  2. Specialty average186

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 practice group's MIPS final score for 2023 (Medicare payment program): 83.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score72.8
  2. Costout of 100 · 30%62.6
  3. Promoting interoperabilityout of 100 · 25%97.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $174.21

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 1,819 providers of this specialty with any payment received $5,529.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Rubinstein$174.21
  2. Specialty average$5,529.86

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Regents OF The University OF CaliforniaOrange, CA
  2. Regents OF The University OF CaliforniaOrange, CA

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

Michael P. Rubinstein among 288 orthopaedic hand surgery physician records in California

Michael P. Rubinstein, M.D. is one of 288 orthopaedic hand surgery physician records with a practice address in California. 85% 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 11% of them.

  • NPI issued2006 · 11% of these records are older, 52% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1982 · median 2004 among the 214 with a school on file
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0106X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Hand Surgery Physician providers in California

There are 288 orthopaedic hand surgery physician records in California.

The 8 orthopaedic hand surgery physician records with the nearest ZIP codes

  1. Donald BittnerFullerton, CA 928351538169578
  2. Carl Chen, M.D.Fullerton, CA 928351235114950
  3. Allen Tham, MDFullerton, CA 928351578715801
  4. David Hay, M.D.Anaheim, CA 928061891982260
  5. Christian Awah, MDOrange, CA 928681013470707
  6. Paul Dinh, M.D.Orange, CA 928681518159961
  7. Navid Ghalambor, M.D.Orange, CA 928681619920667
  8. Daniel GittingsOrange, CA 928681205256229

Common questions

What is Michael P. Rubinstein, M.D.'s NPI number?

Michael P. Rubinstein, M.D.'s National Provider Identifier (NPI) is 1780620013, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael P. Rubinstein, M.D. located?

The NPPES record lists a practice address at 680 Langsdorf Dr, Fullerton, CA, 92831. Phone: (714) 879-0050. Providers update this record themselves, so call before visiting.

How can I verify Michael P. Rubinstein, M.D.'s license?

NPPES lists California license number G58799, 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 Michael P. Rubinstein, M.D. prescribe under Medicare Part D?

In 2024, Michael P. Rubinstein, M.D. had 17 Medicare Part D claims; the average among orthopaedic hand surgery physician prescribers was 186. Part D covers Medicare prescriptions only.

What is Michael P. Rubinstein, M.D.'s MIPS final score?

The 2023 MIPS final score is 83.6 of 100, reported for the practice group. 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.