Charan Singh, M.D.
NPI 1821046319 · Neurology Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charan Singh, M.D. is a Neurology Physician provider in Fremont, CA (NPI 1821046319).
Provider details
- NPI number
- 1821046319
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- BS3515864 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,729 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 564 | $154 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 319 | $140 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 169 | $131 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 146 | $208 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 135 | $64 |
| Critical Care, First 30-74 Minutes99291 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Donepezil Hcl | 238 | 69 |
| Memantine Hcl | 217 | 55 |
| Quetiapine Fumarate | 206 | 53 |
| Duloxetine Hcl | 159 | 34 |
| Levetiracetam | 140 | 35 |
| Gabapentin | 118 | 39 |
| Sertraline Hcl | 94 | 23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$273 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2012-08-23
Frequently asked questions
- What is Charan Singh's NPI number?
- Charan Singh's National Provider Identifier (NPI) is 1821046319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charan Singh's specialty?
- Charan Singh is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Charan Singh located?
- Charan Singh's practice location on file with NPPES is 2243 Mowry Ave, Fremont, CA 94538-1630.
- What is Charan Singh's phone number?
- The practice phone number listed in the NPPES registry for Charan Singh is (510) 795-8000.
- Does Charan Singh accept Medicare?
- Charan Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charan Singh's NPI active?
- Yes — Charan Singh's NPI (1821046319) is active in the NPPES registry as of the last update on 2012-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.