Dr. Subhendu Narayan, MD
- Medicare services, 2024
- 1,335
- Medicare patients, 2024
- 557
- Part D claims, 2024
- 1,304
- MIPS score, 2024
- 91
- Hospital affiliations
- 3
- Practice address
- 365 Lennon Lane, Suite 100, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-4600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Walnut Creek Endoscopy Center
Surgery Center - Medicare-Certified · Walnut Creek, California
Find Dr. Narayan's professional email, personal email and mobile number
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Dr. Subhendu Narayan is a gastroenterologist in Walnut Creek, California
Dr. Narayan practices at Walnut Creek Endoscopy Center in Walnut Creek, California.
Dr. Narayan's NPI, 1427169002, was assigned on August 31, 2006. Dr. Narayan graduated from JS Weill Medical College, Cornell University in 1986. Dr. Narayan holds California license G62132.
- NPI
- 1427169002NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587655311
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 939-4600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Subhendu Narayan practices at Walnut Creek Endoscopy Center in Walnut Creek, California
Dr. Narayan's primary practice is Walnut Creek Endoscopy Center, at 365 Lennon Lane, Suite 100, Walnut Creek, CA 94598. The practice phone is (925) 939-4600.
- Walnut Creek Endoscopy Center365 Lennon Lane, Suite 100, Walnut Creek, CA 94598Phone(925) 939-4600
Source: Dmand AI Affiliation Data
Dr. Subhendu Narayan is affiliated with 7 sites of care and 2 medical groups
Dr. Narayan's primary practice is Walnut Creek Endoscopy Center in Walnut Creek, California. Dr. Narayan is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is BASS Medical Group. Dmand AI also links Dr. Narayan to 2 more hospitals, 2 group practices and clinics, 1 dialysis center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Subhendu Narayan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Narayan practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walnut Creek Endoscopy Center | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Subhendu Narayan is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Narayan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Narayan is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Narayan
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Subhendu Narayan billed Medicare for 1,335 services in 2024
CMS data shows 1,335 Medicare services from Dr. Narayan across 18 procedure codes in 2024, for 557 Medicare patients. Medicare paid $159,247 for them.
Dr. Narayan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7412024: 83212%
- Surgery
- 2023: 4062024: 45111%
- Other services
- 2023: 712024: 5227%
- Tests and treatments
- 2023: 202024: 0100%
Where Dr. Narayan's Medicare services took place, 2024
- In an office75356%
- In a facility58244%
Dr. Narayan compared with the California median for gastroenterologists, 2024
- Dr. Narayan
- California median
- Medicare services
- 1,335vs 5862.3 times
- Medicare patients
- 557vs 30284% above
- Part D claims
- 1,163vs 3803.1 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Narayan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Narayan and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Subhendu Narayan treated 557 Medicare patients in 2024, average age 76
CMS counts 557 Medicare patients who saw Dr. Narayan in 2024. The largest group is 75 to 84, with 282 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Narayan's median patient age at 71, with 38% women.
Dr. Narayan's Medicare patients by age, 2024
Dr. Narayan's Medicare patients by sex, 2024
- Women25145%
- Men30655%
Chronic conditions among Dr. Narayan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis42%
- Ischemic heart disease29%
- Anxiety21%
- Chronic kidney disease21%
- Diabetes21%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Narayan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women38%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Subhendu Narayan wrote 1,304 Medicare Part D claims in 2024
In 2024, Dr. Narayan wrote 1,304 Medicare Part D claims for 523 patients. 89% of them were for generic drugs. CMS names the drug for 1,163 of them, across 13 drugs with 11 or more claims each, at $83,037 in total drug cost. In 2023, CMS named 1,045 claims across 15 drugs.
Dr. Narayan's Part D claims by kind of drug, 2024
- Generic1,162 claims89%
- Brand-name142 claims11%
Dr. Narayan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Narayan's Part D claims, 2024
- Antibiotics2%32 of 1,304 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0452024: 1,16311%
Drugs named by CMS: 13 in 2024, 15 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Subhendu Narayan scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Narayan for performance year 2024, reported individually. Dr. Narayan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Narayan as offering telehealth. CMS counts 254 procedures of colonoscopy by Dr. Narayan, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Narayan's MIPS scores, performance year 2024
- 91of 100Final score
- 85.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 84of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Narayan ranks in Medicare procedure volume
- Colonoscopy
- 96th percentile254 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 91st percentile208 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Subhendu Narayan received $6,141 in industry payments from 2016 to 2025
CMS Open Payments shows 291 general payments to Dr. Narayan from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $1,754.
General payments to Dr. Narayan by program year, 2016 to 2025
General payments to Dr. Narayan by kind, 2016 to 2025
- Food and beverage$6,09099%
- Entertainment$451%
- Education$70%
Companies that paid Dr. Narayan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Subhendu Narayan graduated from JS Weill Medical College, Cornell University
Dr. Narayan graduated from JS Weill Medical College, Cornell University in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Subhendu Narayan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Subhendu Narayan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Subhendu Narayan's NPI number?
Dr. Subhendu Narayan's NPI number is 1427169002. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Subhendu Narayan?
Dr. Subhendu Narayan is a gastroenterologist in Walnut Creek, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Subhendu Narayan practice?
Dr. Narayan practices at 365 Lennon Lane, Suite 100, Walnut Creek, CA 94598. Dr. Narayan's primary practice is Walnut Creek Endoscopy Center in Walnut Creek, California. Dmand AI also links Dr. Narayan to 2 hospitals, 2 group practices and clinics, 1 dialysis center and 1 medical group.
What is Dr. Subhendu Narayan's office phone number?
The practice phone on file for Dr. Narayan is (925) 939-4600.
What is Dr. Subhendu Narayan's medical license number?
Dr. Narayan holds California license G62132.
Which hospitals is Dr. Subhendu Narayan affiliated with?
Dr. Narayan is affiliated with John Muir Medical Center, Walnut Creek. Dmand AI links Dr. Narayan to 2 more hospitals.
What medical group is Dr. Subhendu Narayan part of?
Dr. Narayan is linked to BASS Medical Group. Dmand AI links Dr. Narayan to 1 more medical group.
Does Dr. Subhendu Narayan accept Medicare?
Yes. CMS data shows Dr. Narayan billed Medicare for 1,335 services in 2024, and Dr. Narayan accepts Medicare assignment.
Does Dr. Subhendu Narayan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Narayan as offering telehealth services.
What is Dr. Subhendu Narayan's MIPS score?
Dr. Narayan's MIPS final score for performance year 2024 is 91 out of 100, reported individually.
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How many Medicare patients does Dr. Subhendu Narayan see?
CMS counts 557 Medicare patients who saw Dr. Narayan in 2024, with an average age of 76.
What services does Dr. Subhendu Narayan bill to Medicare?
In 2024, Dr. Narayan's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (43239) and office visit, new patient (99204).
Where did Dr. Subhendu Narayan go to medical school?
Dr. Narayan graduated from JS Weill Medical College, Cornell University in 1986.
What drugs does Dr. Subhendu Narayan prescribe most?
In 2024 Medicare Part D data, Dr. Narayan's most prescribed drugs by claims were Omeprazole, Sod Sulf-Potass Sulf-Mag Sulf and Famotidine.
Has Dr. Subhendu Narayan received payments from drug or device companies?
CMS Open Payments shows $6,141 in general payments to Dr. Narayan from 32 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Subhendu Narayan been practicing?
Dr. Narayan graduated from medical school in 1986, 40 years ago.
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