Simranjit Singh, MD
NPI 1396164356 · Rheumatology Physician · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simranjit Singh, MD is a Rheumatology Physician provider in Mission Viejo, CA (NPI 1396164356).
Provider details
- NPI number
- 1396164356
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A139015 (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
12 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
762 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 | 548 | $138 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $179 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 35 | $193 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 28 | $9 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 24 | $139 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 218 | 69 |
| Prednisone | 148 | 47 |
| Methotrexate Sodiumbrand: Methotrexate | 148 | 45 |
| Tramadol Hcl | 127 | 34 |
| Celecoxib | 102 | 34 |
| Meloxicam | 85 | 32 |
| Diclofenac Sodium | 76 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,770 across 127 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
- 2014-04-07
- Last updated
- 2021-11-10
- Certified
- 2021-11-10
Frequently asked questions
- What is Simranjit Singh's NPI number?
- Simranjit Singh's National Provider Identifier (NPI) is 1396164356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simranjit Singh's specialty?
- Simranjit Singh is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Simranjit Singh located?
- Simranjit Singh's practice location on file with NPPES is 26732 Crown Valley Pkwy Ste 151, Mission Viejo, CA 92691-6337.
- What is Simranjit Singh's phone number?
- The practice phone number listed in the NPPES registry for Simranjit Singh is (949) 347-6044.
- Does Simranjit Singh accept Medicare?
- Simranjit Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simranjit Singh's NPI active?
- Yes — Simranjit Singh's NPI (1396164356) is active in the NPPES registry as of the last update on 2021-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.