NPPES file of Aug 9, 2026

Charan K. Singh, M.D.

Neurology Physician · Fremont, CA

Charan K. Singh, M.D. is a neurology physician with a practice address in Fremont, California, and NPI 1821046319, issued on May 5, 2006. Check the license (California BS3515864, 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
1821046319
Name
Charan K. Singh
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
BS3515864 CA
Self-reported in NPPES; status is on the state search
Practice location
2243 Mowry Ave, Fremont, CA 94538
Phone
(510) 795-8000
Enumerated
May 5, 2006
Record last updated
Aug 23, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(510) 795-8001
Medicare enrollment
Enrolled (PECOS I20050630000626); accepts Medicare assignment
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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Also registered at 2243 Mowry Ave

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

  1. Xiaodong Li, M.D.Pediatrics Physician1487738795
  2. Veena Puri, M.D.Pediatrics Physician1477637775

Verify Charan K. Singh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license BS3515864
    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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58% more Medicare Part D claims than the average neurology physician in 2024

2,167 Medicare Part D claims for 336 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.

  1. Charan Singh2,167
  2. Specialty average1,370

Most prescribed

  1. Donepezil Hcl238 claims
  2. Memantine Hcl217 claims
  3. Quetiapine Fumarate206 claims
  4. Duloxetine Hcl159 claims
  5. Levetiracetam140 claims
  6. Gabapentin118 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): 93.9 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.

  1. Qualityout of 100 · 30% of the final score78.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%95.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $273.46

9 payments; by number, the most common kind was food and beverage; the largest payer was PolyNovo North America LLC. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Charan Singh$273.46
  2. Specialty average$8,318.07

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. Washington Township Hospital DistrictFremont, CA

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

Charan K. Singh among 2,339 neurology physician records in California

Charan K. Singh, M.D. is one of 2,339 neurology 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1988 · median 2006 among the 1,628 with a school on file
  • Record last updated2012 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

The 8 neurology physician records with the nearest ZIP codes

  1. Alok Bhattacharya, M.D.Fremont, CA 945381528092996
  2. Nayan Desai, MDFremont, CA 945381710953773
  3. Jina Janavs, MDFremont, CA 945381063597722
  4. Joy Lin, MDFremont, CA 945381528593902
  5. Holly Maccallum, M.D.Fremont, CA 945381518225788
  6. Stephen Nnodim, MDFremont, CA 945381396199105
  7. John Ribaudo, MDFremont, CA 945381598844649
  8. Ravinder Kahlon, M.D.Fremont, CA 945361386741320

Common questions

What is Charan K. Singh, M.D.'s NPI number?

Charan K. Singh, M.D.'s National Provider Identifier (NPI) is 1821046319, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Charan K. Singh, M.D. located?

The NPPES record lists a practice address at 2243 Mowry Ave, Fremont, CA, 94538. Phone: (510) 795-8000. Providers update this record themselves, so call before visiting.

How can I verify Charan K. Singh, M.D.'s license?

NPPES lists California license number BS3515864, 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 Charan K. Singh, M.D. prescribe under Medicare Part D?

In 2024, Charan K. Singh, M.D. had 2,167 Medicare Part D claims for 336 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

What is Charan K. Singh, M.D.'s MIPS final score?

The 2023 MIPS final score is 93.9 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.