3' Untranslated RegionsBase SequenceData Interpretation, Statistical
Dr. Moe T. Zan, MD
NPI1831365378PAC ID7113115940
- Medicare services, 2024
- 52,347
- Medicare patients, 2024
- 405
- Part D claims, 2024
- 884
- Publications
- 2
- MIPS score, 2024
- 90
- Practice address
- 4801 Dorsey Hall Dr, Ellicott City, MD 21042
- Practice phone
- Call (410) 992-7440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arthritis Care Specialists of Maryland, P.A.
Ellicott City, Maryland
Find Dr. Zan's professional email, personal email and mobile number
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Dr. Moe T. Zan is a rheumatologist in Ellicott City, Maryland
Dr. Zan practices at Arthritis Care Specialists of Maryland, P.A. in Ellicott City, Maryland.
Dr. Zan's NPI, 1831365378, was assigned on May 5, 2008. Dr. Zan holds Maryland license D64424.
NPI and contact details
- NPI
- 1831365378NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113115940
- NPI enumeration date
- May 5, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (410) 992-7440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Moe T. Zan practices at Arthritis Care Specialists of Maryland, P.A. in Ellicott City, Maryland
Dr. Zan's primary practice is Arthritis Care Specialists of Maryland, P.A., at 4801 Dorsey Hall Dr, Ellicott City, MD 21042 in Howard County. The practice phone is (410) 992-7440.
- Arthritis Care Specialists of Maryland, P.A.4801 Dorsey Hall Dr, Ellicott City, MD 21042 · Howard CountyPhone(410) 992-7440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Moe T. Zan is affiliated with 3 sites of care and 2 medical groups
Dr. Zan's primary practice is Arthritis Care Specialists of Maryland, P.A. in Ellicott City, Maryland. The medical group on file is Arthritis Care Specialists of Maryland. Dmand AI also links Dr. Zan to 2 more group practices and clinics and 1 medical group, each named with a free account.
Arthritis Care Specialists of Maryland, P.A.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Moe T. Zan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arthritis Care Specialists of Maryland, P.A. | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Moe T. Zan is one of 177 rheumatologists in Maryland
Rheumatology is Dr. Zan's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dmand AI has Dr. Zan's licenses on file in 2 states: Maryland and New Hampshire.
Specialties and state licenses
- Rheumatology, MarylandPrimary
- New Hampshire license
Rheumatologists near Dr. Zan
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
177rheumatologists in Maryland
8rheumatologists in Ellicott City
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Moe T. Zan billed Medicare for 52,347 services in 2024
CMS data shows 52,347 Medicare services from Dr. Zan across 31 procedure codes in 2024, for 405 Medicare patients. Medicare paid $798,516 for them. Every service was in an office.
Medicare services, 202452,347
Medicare patients405
Paid by Medicare$798,516
Procedure codes31
Dr. Zan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 34,4322024: 47,75139%
- Lab and pathology
- 2023: 2,0622024: 1,82511%
- Office and hospital visits
- 2023: 8572024: 858No change
- Tests and treatments
- 2023: 7892024: 8214%
- Other services
- 2023: 362024: 5781506%
- Surgery
- 2023: 5222024: 5142%
Dr. Zan compared with the Maryland median for rheumatologists, 2024
- Dr. Zan
- Maryland median
- Medicare services
- 52,347vs 3,91513.4 times
- Medicare patients
- 405vs 30035% above
- Part D claims
- 710vs 7829% below
Medians across 168 rheumatologists in Maryland with Dmand AI profiles that report each measure.
Dr. Zan'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Moe T. Zan treated 405 Medicare patients in 2024, average age 76
CMS counts 405 Medicare patients who saw Dr. Zan in 2024. The largest group is 75 to 84, with 169 patients. 75% of them have arthritis, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zan's median patient age at 63, with 75% women.
Medicare patients, 2024405
Average age76
Average risk score1.21
Also on Medicaid13%
Dr. Zan's Medicare patients by age, 2024
Dr. Zan's Medicare patients by sex, 2024
- Women31678%
- Men8922%
Chronic conditions among Dr. Zan's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure70%
- Osteoporosis49%
- Mood disorders25%
- Chronic kidney disease23%
- Ischemic heart disease23%
- Depression22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women75%
- Men24%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Moe T. Zan wrote 884 Medicare Part D claims in 2024
In 2024, Dr. Zan wrote 884 Medicare Part D claims for 211 patients. 84% of them were for generic drugs. CMS names the drug for 710 of them, across 15 drugs with 11 or more claims each, at $390,962 in total drug cost. In 2023, CMS named 686 claims across 18 drugs.
Part D claims, 2024884
Drugs named by CMS15
Total drug cost$390,962
Part D patients211
Dr. Zan's Part D claims by kind of drug, 2024
- Generic746 claims84%
- Brand-name120 claims14%
- Other18 claims2%
Dr. Zan'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. Zan's Part D claims, 2024
- Opioids2%15 of 884 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: 6862024: 7103%
Drugs named by CMS: 15 in 2024, 18 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. Moe T. Zan scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Zan for performance year 2024, reported as part of a group. Dr. Zan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Zan's MIPS scores, performance year 2024
- 90of 100Final score
- 89.8of 100Quality
- 40of 100Improvement Activities
- 80of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Moe T. Zan has 2 publications on record
Dmand AI links 2 papers to Dr. Zan. Dr. Zan's most frequent co-author is Whitney Farnsworth Hilton, DO.
Papers2
Dr. Zan's most frequent co-authors
Recent publications by Dr. Zan
Arthritis Rheum
Arthritis, RheumatoidComplement C4aComplement C4b
See who Dr. Zan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zan works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Moe T. Zan received $35,006 in industry payments from 2016 to 2025
CMS Open Payments shows 1,921 general payments to Dr. Zan from 59 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Amgen Inc. paid the most, $5,985.
General payments to Dr. Zan by program year, 2016 to 2025
General payments to Dr. Zan by kind, 2016 to 2025
$35Kin total
- Food and beverage$34,42898%
- Education$5772%
Companies that paid Dr. Zan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Moe T. Zan's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Moe T. Zan
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. Moe T. Zan's NPI number?
Dr. Moe T. Zan's NPI number is 1831365378. It was assigned on May 5, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Moe T. Zan?
Dr. Moe T. Zan is a rheumatologist in Ellicott City, Maryland. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Moe T. Zan practice?
Dr. Zan practices at 4801 Dorsey Hall Dr, Ellicott City, MD 21042. Dr. Zan's primary practice is Arthritis Care Specialists of Maryland, P.A. in Ellicott City, Maryland. Dmand AI also links Dr. Zan to 2 group practices and clinics and 1 medical group.
What is Dr. Moe T. Zan's office phone number?
The practice phone on file for Dr. Zan is (410) 992-7440.
What is Dr. Moe T. Zan's medical license number?
Dr. Zan holds Maryland license D64424, one of the licenses on file in 2 states.
Which states has Dr. Moe T. Zan been licensed in?
Dmand AI has state licenses on file for Dr. Zan in Maryland and New Hampshire.
What medical group is Dr. Moe T. Zan part of?
Dr. Zan is linked to Arthritis Care Specialists of Maryland. Dmand AI links Dr. Zan to 1 more medical group.
Does Dr. Moe T. Zan accept Medicare?
Yes. CMS data shows Dr. Zan billed Medicare for 52,347 services in 2024, and Dr. Zan accepts Medicare assignment.
Does Dr. Moe T. Zan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zan as offering telehealth services.
What is Dr. Moe T. Zan's MIPS score?
Dr. Zan's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Moe T. Zan see?
CMS counts 405 Medicare patients who saw Dr. Zan in 2024, with an average age of 76.
What services does Dr. Moe T. Zan bill to Medicare?
In 2024, Dr. Zan's most billed Medicare services were injected or infused drug (J3111), injected or infused drug (J0897) and injected or infused drug (J1602).
What drugs does Dr. Moe T. Zan prescribe most?
In 2024 Medicare Part D data, Dr. Zan's most prescribed drugs by claims were Methotrexate, Prednisone and Allopurinol.
Has Dr. Moe T. Zan received payments from drug or device companies?
CMS Open Payments shows $35,006 in general payments to Dr. Zan from 59 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Moe T. Zan been practicing?
Dr. Zan graduated from medical school in 1998, 28 years ago.
Does Dr. Moe T. Zan do research?
Dmand AI links 2 publications to Dr. Zan.
Who does Dr. Moe T. Zan publish with?
Dr. Zan's most frequent co-authors are Whitney Farnsworth Hilton, DO (1 shared paper).
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