NPPES file of Aug 9, 2026

Benjamin Greer, M.D.

Pain Medicine Physician · Danville, CA

Benjamin Greer, M.D. is a pain medicine physician with a practice address in Danville, California, and NPI 1871890525, issued on Feb 15, 2011. Check the license (California G45340, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871890525
Name
Benjamin Greer
Credential
M.D.
Primary taxonomy
Pain Medicine Physician 208VP0000X
License number
G45340 CA
Self-reported in NPPES; status is on the state search
Practice location
197 Whispering Trees LN, Danville, CA 94526
Phone
(925) 915-9314
Enumerated
Feb 15, 2011
Record last updated
Aug 30, 2024
Medicare enrollment
Enrolled (PECOS I20181204002187); accepts Medicare assignment
Medical or professional school
State University Of Ny Upstate Medical University, 1980
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 Benjamin Greer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G45340
    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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62% fewer Medicare Part D claims than the average pain medicine physician in 2024

804 Medicare Part D claims for 137 beneficiaries, against an average of 2,095 among the 944 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 286 claims were for opioids.

  1. Benjamin Greer804
  2. Specialty average2,095

Most prescribed

  1. Hydrocodone-Acetaminophen182 claims
  2. Buprenorphine Hcl51 claims
  3. Gabapentin51 claims
  4. Oxycodone-Acetaminophen50 claims
  5. Pregabalin30 claims
  6. Trazodone Hcl28 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.

Industry payments in 2024: $142.08

5 payments; by number, the most common kind was food and beverage; the largest payer was Forte Bio-Pharma LLC. The 769 providers of this specialty with any payment received $3,397.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Benjamin Greer$142.08
  2. Specialty average$3,397.95

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. Vital Total Health Medical Group IncWalnut Creek, CA

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

Benjamin Greer among 140 pain medicine physician records in California

Benjamin Greer, M.D. is one of 140 pain medicine physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 69% of them.

  • NPI issued2011 · 69% of these records are older, 29% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1980 · median 2001 among the 81 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208VP0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine Physician providers in California

There are 140 pain medicine physician records in California.

The 8 pain medicine physician records with the nearest ZIP codes

  1. Ya-Ting Chen, MDFremont, CA 945381982095535
  2. Lanny Hsu, D.O.Martinez, CA 945531487834560
  3. Sima Sadeghinejad, MDMartinez, CA 945531902432859
  4. Eric Grigsby, M.D.Napa, CA 945581952328494
  5. Susan Gutierrez, MDSan Ramon, CA 945831518961127
  6. Stephen Levit, M.D.Walnut Creek, CA 945971730421603
  7. Kasra Amirdelfan, MDWalnut Creek, CA 945981033113642
  8. Leslie Delaney, M.D.Walnut Creek, CA 945981124110309

Common questions

What is Benjamin Greer, M.D.'s NPI number?

Benjamin Greer, M.D.'s National Provider Identifier (NPI) is 1871890525, issued on Feb 15, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Benjamin Greer, M.D. located?

The NPPES record lists a practice address at 197 Whispering Trees LN, Danville, CA, 94526. Phone: (925) 915-9314. Providers update this record themselves, so call before visiting.

How can I verify Benjamin Greer, M.D.'s license?

NPPES lists California license number G45340, 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 Benjamin Greer, M.D. prescribe under Medicare Part D?

In 2024, Benjamin Greer, M.D. had 804 Medicare Part D claims for 137 beneficiaries; the average among pain medicine physician prescribers was 2,095. Part D covers Medicare prescriptions only.

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.