NPPES file of Aug 9, 2026

Gareth W. Hammond, M.D.

Orthopaedic Surgery Physician · Long Beach, CA

Gareth W. Hammond, M.D. is an orthopaedic surgery physician with a practice address in Long Beach, California, and NPI 1134246150, issued on Mar 23, 2007. Check the license (California A79879, 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
1134246150
Name
Gareth W. Hammond
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
A79879 CA
Self-reported in NPPES; status is on the state search
Practice location
1040 Elm Ave, Long Beach, CA 90813
Phone
(562) 591-4444
Enumerated
Mar 23, 2007
Record last updated
Aug 30, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(562) 436-7350
Medicare enrollment
Enrolled (PECOS I20120227000361); accepts Medicare assignment
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 1040 Elm Ave

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

  1. Faustino Bernadett, M.D.Pain Medicine (Anesthesiology) Physician1003966763
  2. William Bernstein, M.D.Specialist1194769745
  3. Patrick Cahill, M.D.Specialist1003855958
  4. Tanya De La Cerda, PTPhysical Therapist1891770970
  5. Edward Green, M.D.Orthopaedic Surgery Physician1467554220
  6. Gita Kalantari, MDFamily Medicine Physician1790968659

Verify Gareth W. Hammond in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A79879
    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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59% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

142 Medicare Part D claims for 74 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 39 claims were for opioids.

  1. Gareth Hammond142
  2. Specialty average346

Most prescribed

  1. Cephalexin35 claims
  2. Oxycodone Hcl28 claims
  3. Pantoprazole Sodium27 claims
  4. Meloxicam26 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): 69 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. Qualitynot scored (reweighted)
  2. Costout of 100 · 30%38.1
  3. Promoting interoperabilitynot scored (reweighted)
  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: $390.69

7 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gareth Hammond$391
  2. Specialty average$23,023

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. Animas Orthopedic Associates And Sports Medicine PCDurango, CO
  2. Animas Surgical Hospital LLCDurango, CO

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

Gareth W. Hammond among 2,276 orthopaedic surgery physician records in California

Gareth W. Hammond, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.

  • NPI issued2007 · 54% of these records are older, 35% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2001 · median 2003 among the 1,347 with a school on file
  • Record last updated2011 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X 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 Physician providers in California

There are 2,276 orthopaedic surgery physician records in California.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Edward Green, M.D.Long Beach, CA 908131467554220
  2. Harry Marinow, M.D.Long Beach, CA 908131679669444
  3. Manuel Anel, M.D.Long Beach, CA 908071972625382
  4. Amandeep Bhalla, MDLong Beach, CA 908071972814069
  5. Alexander Latteri, MDLong Beach, CA 908071427086321
  6. Shahryar Ahmadi, MDLong Beach, CA 908061629383997
  7. Farhad Hajaliloo, M.D.Long Beach, CA 908061780674507
  8. Mahmood Jazayeri, M DLong Beach, CA 908061679512560

Common questions

What is Gareth W. Hammond, M.D.'s NPI number?

Gareth W. Hammond, M.D.'s National Provider Identifier (NPI) is 1134246150, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Gareth W. Hammond, M.D. located?

The NPPES record lists a practice address at 1040 Elm Ave, Long Beach, CA, 90813. Phone: (562) 591-4444. Providers update this record themselves, so call before visiting.

How can I verify Gareth W. Hammond, M.D.'s license?

NPPES lists California license number A79879, 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 Gareth W. Hammond, M.D. prescribe under Medicare Part D?

In 2024, Gareth W. Hammond, M.D. had 142 Medicare Part D claims for 74 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is Gareth W. Hammond, M.D.'s MIPS final score?

The 2023 MIPS final score is 69 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.