Ashwin Ashok, M.D.
NPI 1134311236 · Gastroenterology Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashwin Ashok, M.D. is a Gastroenterology Physician provider in Whittier, CA (NPI 1134311236).
Provider details
- NPI number
- 1134311236
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A97611 (CA)
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
18 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
716 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 | 202 | $138 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 88 | $82 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 69 | $180 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 66 | $109 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 61 | $261 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 440 | 198 |
| Pantoprazole Sodium | 308 | 113 |
| Lipase/Protease/Amylasebrand: Creon | 111 | 27 |
| Linaclotidebrand: Linzess | 105 | 30 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 88 | 83 |
| Lansoprazole | 88 | 29 |
| Cholestyramine (with Sugar)brand: Cholestyramine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,329 across 43 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
- 2007-08-13
- Last updated
- 2014-08-22
Frequently asked questions
- What is Ashwin Ashok's NPI number?
- Ashwin Ashok's National Provider Identifier (NPI) is 1134311236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashwin Ashok's specialty?
- Ashwin Ashok is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ashwin Ashok located?
- Ashwin Ashok's practice location on file with NPPES is 12291 Washington Blvd, Whittier, CA 90606-2500.
- What is Ashwin Ashok's phone number?
- The practice phone number listed in the NPPES registry for Ashwin Ashok is (562) 698-0306.
- Does Ashwin Ashok accept Medicare?
- Ashwin Ashok is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashwin Ashok's NPI active?
- Yes — Ashwin Ashok's NPI (1134311236) is active in the NPPES registry as of the last update on 2014-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.