NPPES file of Aug 9, 2026

Gideon Blumstein, MD, MS

Orthopaedic Surgery of the Spine Physician · Marina Del Rey, CA

Gideon Blumstein, MD, MS is an orthopaedic surgery of the spine physician with a practice address in Marina Del Rey, California, and NPI 1164819207, issued on Apr 15, 2015. Check the license (California A149225, 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
1164819207
Name
Gideon Blumstein
Credential
MD, MS
Primary taxonomy
Orthopaedic Surgery of the Spine Physician 207XS0117X
License numbers
A149225 CA
036.155746 IL
Self-reported in NPPES; status is on the state search
Practice location
4640 Admiralty Way Ste 600, Marina Del Rey, CA 90292
Phone
(310) 448-7890
Enumerated
Apr 15, 2015
Record last updated
Dec 15, 2022
Medicare enrollment
Enrolled (PECOS I20221110001221); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 2015
Telehealth
Offers telehealth (CMS)
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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Verify Gideon Blumstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A149225
    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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65% fewer Medicare Part D claims than the average orthopaedic surgery of the spine physician in 2024

135 Medicare Part D claims for 58 beneficiaries, against an average of 381 among the 1,714 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 26 claims were for opioids.

  1. Gideon Blumstein135
  2. Specialty average381

Most prescribed

  1. Meloxicam31 claims
  2. Methylprednisolone24 claims
  3. Tramadol Hcl13 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 practice group's MIPS final score for 2023 (Medicare payment program): 85.7 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 score85.7
  2. Costout of 100 · 30%61.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  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: $1,335.41

10 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 1,726 providers of this specialty with any payment received $34,071.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gideon Blumstein$1,335
  2. Specialty average$34,072

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

Bills Medicare through one group practice

  1. Cedars-Sinai Medical Care FoundationMarina Del Rey, CA

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

Gideon Blumstein among 314 orthopaedic surgery of the spine physician records in California

Gideon Blumstein, MD, MS is one of 314 orthopaedic surgery of the spine physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 83% of them.

  • NPI issued2015 · 83% of these records are older, 13% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2015 · median 2003 among the 226 with a school on file
  • Record last updated2022 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0117X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery of the Spine Physician providers in California

There are 314 orthopaedic surgery of the spine physician records in California.

The 8 orthopaedic surgery of the spine physician records with the nearest ZIP codes

  1. Neil Bhamb, M.D.Marina Del Rey, CA 902921629235791
  2. David Chang, M.D.Marina Del Rey, CA 902921467575472
  3. Sanjay Khurana, M.D.Marina Del Rey, CA 902921831145937
  4. Grant Shifflett, M.D.Marina Del Rey, CA 902921932423456
  5. Robert Watkins, M.D.Marina Del Rey, CA 902921952440505
  6. Robert Watkins, M.D.Marina Del Rey, CA 902921336288992
  7. Edward Kolpin, D.O.Pacific Palisades, CA 902721154362432
  8. Pranay Patel, M.D.Manhattan Beach, CA 902661134477565

Common questions

What is Gideon Blumstein, MD, MS's NPI number?

Gideon Blumstein, MD, MS's National Provider Identifier (NPI) is 1164819207, issued on Apr 15, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Gideon Blumstein, MD, MS located?

The NPPES record lists a practice address at 4640 Admiralty Way Ste 600, Marina Del Rey, CA, 90292. Phone: (310) 448-7890. Providers update this record themselves, so call before visiting.

How can I verify Gideon Blumstein, MD, MS's license?

NPPES lists California license number A149225, 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 Gideon Blumstein, MD, MS prescribe under Medicare Part D?

In 2024, Gideon Blumstein, MD, MS had 135 Medicare Part D claims for 58 beneficiaries; the average among orthopaedic surgery of the spine physician prescribers was 381. Part D covers Medicare prescriptions only.

What is Gideon Blumstein, MD, MS's MIPS final score?

The 2023 MIPS final score is 85.7 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.