Richard Chun, M.D.
NPI 1003818055 · Gastroenterology Physician · Citrus Heights, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Chun, M.D. is a Gastroenterology Physician provider in Citrus Heights, CA (NPI 1003818055).
Provider details
- NPI number
- 1003818055
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C28231 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
21 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 308 | 101 |
| Lisinopril | 199 | 60 |
| Metformin Hcl | 191 | 67 |
| Amlodipine Besylate | 161 | 63 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 137 | 39 |
| Gabapentin | 136 | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$51 across 2 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)
- 729 Sunrise AveSte 619Roseville, CA 95661-4548Phone: (916) 783-7118
Registry dates
- Enumerated
- 2005-06-02
- Last updated
- 2022-12-21
- Certified
- 2022-12-21
Frequently asked questions
- What is Richard Chun's NPI number?
- Richard Chun's National Provider Identifier (NPI) is 1003818055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Chun's specialty?
- Richard Chun is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Chun located?
- Richard Chun's practice location on file with NPPES is 7777 Sunrise Blvd Ste 2500, Citrus Heights, CA 95610-2372.
- What is Richard Chun's phone number?
- The practice phone number listed in the NPPES registry for Richard Chun is (916) 737-5555.
- Does Richard Chun accept Medicare?
- Richard Chun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Chun's NPI active?
- Yes — Richard Chun's NPI (1003818055) is active in the NPPES registry as of the last update on 2022-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.