Siddhartha Parker, M.D.
NPI 1417117532 · Gastroenterology Physician · Lebanon, NH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siddhartha Parker, M.D. is a Gastroenterology Physician provider in Lebanon, NH (NPI 1417117532).
Provider details
- NPI number
- 1417117532
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 16649 (NH)
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 tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
618 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 124 | $5 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 108 | $238 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 70 | $68 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 46 | $125 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 37 | $88 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mesalamine | 51 | 15 |
| Omeprazole | 25 | — |
| Ustekinumabbrand: Stelara | 19 | — |
| Colestipol Hcl | 17 | — |
| Ringer'S Solution,lactatedbrand: Lactated Ringers | 12 | — |
| Budesonidebrand: Budesonide Dr | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-12
- Last updated
- 2016-05-02
Frequently asked questions
- What is Siddhartha Parker's NPI number?
- Siddhartha Parker's National Provider Identifier (NPI) is 1417117532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siddhartha Parker's specialty?
- Siddhartha Parker is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Siddhartha Parker located?
- Siddhartha Parker's practice location on file with NPPES is 1 Medical Center Dr, Lebanon, NH 03756-1000.
- What is Siddhartha Parker's phone number?
- The practice phone number listed in the NPPES registry for Siddhartha Parker is (603) 650-5261.
- Does Siddhartha Parker accept Medicare?
- Siddhartha Parker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siddhartha Parker's NPI active?
- Yes — Siddhartha Parker's NPI (1417117532) is active in the NPPES registry as of the last update on 2016-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.