Dr. Weiming Ryan Yan, MD
- Medicare services, 2024
- 666
- Medicare patients, 2024
- 344
- Part D claims, 2024
- 616
- MIPS score, 2024
- 67
- Hospital affiliations
- 2
- Practice address
- 7115 Guilford Drive, Suite 201, Frederick, MD 21704
- Practice phone
- Call (301) 682-6261
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Frederick Endoscopy Center
Surgery Center - Medicare-Certified · Frederick, Maryland
Find Dr. Yan's professional email, personal email and mobile number
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Dr. Weiming Ryan Yan is a gastroenterologist in Frederick, Maryland
Dr. Yan practices at Frederick Endoscopy Center in Frederick, Maryland.
Dr. Yan's NPI, 1851552624, was assigned on June 24, 2008. Dr. Yan graduated from Ohio State University College of Medicine in 2008. Dr. Yan holds Maryland license D0072237.
- NPI
- 1851552624NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971772765
- NPI enumeration date
- June 24, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 682-6261
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Weiming Ryan Yan practices at Frederick Endoscopy Center in Frederick, Maryland
Dr. Yan's primary practice is Frederick Endoscopy Center, at 7115 Guilford Drive, Suite 201, Frederick, MD 21704. The practice phone is (301) 682-6261.
- Frederick Endoscopy Center7115 Guilford Drive, Suite 201, Frederick, MD 21704Phone(301) 682-6261
Source: Dmand AI Affiliation Data
Dr. Weiming Ryan Yan is affiliated with 5 sites of care and 2 medical groups
Dr. Yan's primary practice is Frederick Endoscopy Center in Frederick, Maryland. Dr. Yan is also affiliated with Frederick Health Hospital. The medical group on file is Frederick Gastroenterology Associates. Dmand AI also links Dr. Yan to 1 more hospital, 2 group practices and clinics 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. Weiming Ryan Yan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Frederick Endoscopy Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Weiming Ryan Yan is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. Yan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Yan is licensed in Maryland.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
Gastroenterologists near Dr. Yan
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. Weiming Ryan Yan billed Medicare for 666 services in 2024
CMS data shows 666 Medicare services from Dr. Yan across 6 procedure codes in 2024, for 344 Medicare patients. Medicare paid $63,388 for them.
Dr. Yan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3692024: 3731%
- Surgery
- 2023: 3232024: 2939%
Where Dr. Yan's Medicare services took place, 2024
- In an office37356%
- In a facility29344%
Dr. Yan compared with the Maryland median for gastroenterologists, 2024
- Dr. Yan
- Maryland median
- Medicare services
- 666vs 668Close to median
- Medicare patients
- 344vs 39012% below
- Part D claims
- 485vs 39224% above
Medians across 396 gastroenterologists in Maryland with Dmand AI profiles that report each measure.
Dr. Yan'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. Yan and other gastroenterologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Weiming Ryan Yan treated 344 Medicare patients in 2024, average age 74
CMS counts 344 Medicare patients who saw Dr. Yan in 2024. The largest group is 65 to 74, with 187 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 5% 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. Yan's median patient age at 57, with 49% women.
Dr. Yan's Medicare patients by age, 2024
Dr. Yan's Medicare patients by sex, 2024
- Women17852%
- Men16648%
Chronic conditions among Dr. Yan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis54%
- Ischemic heart disease31%
- Diabetes30%
- Anxiety26%
- Mood disorders26%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Weiming Ryan Yan wrote 616 Medicare Part D claims in 2024
In 2024, Dr. Yan wrote 616 Medicare Part D claims for 186 patients. 90% of them were for generic drugs. CMS names the drug for 485 of them, across 11 drugs with 11 or more claims each, at $23,073 in total drug cost. In 2023, CMS named 350 claims across 9 drugs.
Dr. Yan's Part D claims by kind of drug, 2024
- Generic554 claims90%
- Brand-name and other62 claims10%
Dr. Yan'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. Yan's Part D claims, 2024
- Antibiotics2%14 of 616 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: 3502024: 48539%
Drugs named by CMS: 11 in 2024, 9 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. Weiming Ryan Yan scored 67 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 67 out of 100 for Dr. Yan for performance year 2024, reported as part of a group. Dr. Yan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 93 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Yan, more than 75% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Yan's MIPS scores, performance year 2024
- 67of 100Final score
- 39.1of 100Quality
- 89of 100Promoting Interoperability
- 40of 100Improvement Activities
- 61of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Yan ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 75th percentile93 procedures
- Colonoscopy
- 71st percentile70 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. Weiming Ryan Yan received $8,292 in industry payments from 2016 to 2025
CMS Open Payments shows 364 general payments to Dr. Yan from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $1,441.
General payments to Dr. Yan by program year, 2016 to 2025
General payments to Dr. Yan by kind, 2016 to 2025
- Food and beverage$8,09398%
- Education$1992%
Companies that paid Dr. Yan 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. Weiming Ryan Yan graduated from Ohio State University College of Medicine
Dr. Yan graduated from Ohio State University College of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Weiming Ryan Yan'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. Weiming Ryan Yan
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. Weiming Ryan Yan's NPI number?
Dr. Weiming Ryan Yan's NPI number is 1851552624. It was assigned on June 24, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Weiming Ryan Yan?
Dr. Weiming Ryan Yan is a gastroenterologist in Frederick, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Weiming Ryan Yan practice?
Dr. Yan practices at 7115 Guilford Drive, Suite 201, Frederick, MD 21704. Dr. Yan's primary practice is Frederick Endoscopy Center in Frederick, Maryland. Dmand AI also links Dr. Yan to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Weiming Ryan Yan's office phone number?
The practice phone on file for Dr. Yan is (301) 682-6261.
What is Dr. Weiming Ryan Yan's medical license number?
Dr. Yan holds Maryland license D0072237.
Which hospitals is Dr. Weiming Ryan Yan affiliated with?
Dr. Yan is affiliated with Frederick Health Hospital. Dmand AI links Dr. Yan to 1 more hospital.
What medical group is Dr. Weiming Ryan Yan part of?
Dr. Yan is linked to Frederick Gastroenterology Associates. Dmand AI links Dr. Yan to 1 more medical group.
Does Dr. Weiming Ryan Yan accept Medicare?
Yes. CMS data shows Dr. Yan billed Medicare for 666 services in 2024, and Dr. Yan accepts Medicare assignment.
What is Dr. Weiming Ryan Yan's MIPS score?
Dr. Yan's MIPS final score for performance year 2024 is 67 out of 100, reported as part of a group.
How many Medicare patients does Dr. Weiming Ryan Yan see?
CMS counts 344 Medicare patients who saw Dr. Yan in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Weiming Ryan Yan bill to Medicare?
In 2024, Dr. Yan's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45380) and office visit, established patient (99213).
Where did Dr. Weiming Ryan Yan go to medical school?
Dr. Yan graduated from Ohio State University College of Medicine in 2008.
What drugs does Dr. Weiming Ryan Yan prescribe most?
In 2024 Medicare Part D data, Dr. Yan's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Famotidine.
Has Dr. Weiming Ryan Yan received payments from drug or device companies?
CMS Open Payments shows $8,292 in general payments to Dr. Yan from 31 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Weiming Ryan Yan been practicing?
Dr. Yan graduated from medical school in 2008, 18 years ago.
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