Samarjit Singh, MD
NPI 1689786139 · Pulmonary Disease Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samarjit Singh, MD is a Pulmonary Disease Physician provider in Fountain Valley, CA (NPI 1689786139).
Provider details
- NPI number
- 1689786139
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A92484 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
4,821 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,454 | $122 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,101 | $135 |
| Critical Care, First 30-74 Minutes99291 | 821 | $217 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 197 | $16 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 173 | $179 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 49 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 1,010 | 442 |
| Montelukast Sodium | 944 | 352 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 854 | 210 |
| Prednisone | 661 | 362 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 448 | 177 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 405 | 92 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,066 across 143 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
- 2006-08-31
- Last updated
- 2025-06-11
- Certified
- 2025-06-11
Frequently asked questions
- What is Samarjit Singh's NPI number?
- Samarjit Singh's National Provider Identifier (NPI) is 1689786139, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samarjit Singh's specialty?
- Samarjit Singh is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Samarjit Singh located?
- Samarjit Singh's practice location on file with NPPES is 11100 Warner Ave Ste 120, Fountain Valley, CA 92708-7500.
- What is Samarjit Singh's phone number?
- The practice phone number listed in the NPPES registry for Samarjit Singh is (714) 672-0049.
- Does Samarjit Singh accept Medicare?
- Samarjit Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samarjit Singh's NPI active?
- Yes — Samarjit Singh's NPI (1689786139) is active in the NPPES registry as of the last update on 2025-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.