Shahid Siddiqui, MD
NPI 1639276140 · Internal Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shahid Siddiqui, MD is a Internal Medicine Physician provider in Lancaster, CA (NPI 1639276140).
Provider details
- NPI number
- 1639276140
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35650 (AZ)
Specialties & taxonomies
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,032 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 35 Minutes99232 | 407 | $81 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 173 | $51 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 157 | $119 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 102 | $121 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 50 | $113 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 117 | 37 |
| Apixabanbrand: Eliquis | 103 | 28 |
| Famotidine | 89 | 25 |
| Furosemide | 73 | 26 |
| Lisinopril | 69 | 13 |
| Amlodipine Besylate | 63 | 22 |
| Gabapentin | 60 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$172 across 6 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
Additional practice locations (1)
- 26542 Brooks CirStevenson Ranch, CA 91381-1432Phone: (702) 579-5858Fax: (800) 890-6055
Registry dates
- Enumerated
- 2006-09-19
- Last updated
- 2018-03-17
Frequently asked questions
- What is Shahid Siddiqui's NPI number?
- Shahid Siddiqui's National Provider Identifier (NPI) is 1639276140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shahid Siddiqui's specialty?
- Shahid Siddiqui is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Shahid Siddiqui located?
- Shahid Siddiqui's practice location on file with NPPES is 43830 10th St W, Lancaster, CA 93534-4826.
- What is Shahid Siddiqui's phone number?
- The practice phone number listed in the NPPES registry for Shahid Siddiqui is (702) 579-5858.
- Does Shahid Siddiqui accept Medicare?
- Shahid Siddiqui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shahid Siddiqui's NPI active?
- Yes — Shahid Siddiqui's NPI (1639276140) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.