Curr Treatm Opt Rheumatol
Dr. Grant H. Louie, MD
- Medicare services, 2024
- 189,569
- Medicare patients, 2024
- 855
- Part D claims, 2024
- 1,876
- Publications
- 16
- Clinical trials
- 1
- Practice address
- 161 Thomas Johnson Dr, Frederick, MD 21702
- Practice phone
- Call (301) 942-7600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arthritis and Rheumatism Associates
Frederick, Maryland
Find Dr. Louie's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Grant H. Louie is a rheumatologist in Frederick, Maryland
Dr. Louie practices at Arthritis and Rheumatism Associates in Frederick, Maryland.
Dr. Louie's NPI, 1306013214, was assigned on May 9, 2008. Dr. Louie graduated from Drexel University College Of Medicine in 2001. Dr. Louie holds Maryland license D0071182.
- NPI
- 1306013214NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082809546
- NPI enumeration date
- May 9, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (301) 942-7600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grant H. Louie practices at Arthritis and Rheumatism Associates in Frederick, Maryland
Dr. Louie's primary practice is Arthritis and Rheumatism Associates, at 161 Thomas Johnson Dr, Frederick, MD 21702 in Frederick County. The practice phone is (301) 942-7600.
- Arthritis and Rheumatism Associates161 Thomas Johnson Dr, Frederick, MD 21702 · Frederick CountyPhone(301) 942-7600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Grant H. Louie is affiliated with 5 sites of care and 2 medical groups
Dr. Louie's primary practice is Arthritis and Rheumatism Associates in Frederick, Maryland. Dr. Louie is also affiliated with Frederick Health Hospital. The medical group on file is Amber Hill Therapy Centers. Dmand AI also links Dr. Louie to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Grant H. Louie's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Louie practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arthritis and Rheumatism Associates | 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. Grant H. Louie is one of 177 rheumatologists in Maryland
Rheumatology is Dr. Louie's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Louie is board certified in rheumatology by the American Board of Internal Medicine. Dmand AI has Dr. Louie's licenses on file in 2 states: Maryland and California.
Specialties and state licenses
- Rheumatology, MarylandPrimary
- California license
Clinical focus
Dmand AI lists arteritis, arthritis, fibromyalgia and chronic pain, gout, joint arthropathy, joint pain, lupus and muscle disease among the conditions Dr. Louie treats.
Rheumatologists near Dr. Louie
Counts of rheumatologists 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. Grant H. Louie billed Medicare for 189,569 services in 2024
CMS data shows 189,569 Medicare services from Dr. Louie across 49 procedure codes in 2024, for 855 Medicare patients. Medicare paid $2,681,625 for them. Every service was in an office.
Dr. Louie's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 131,8292024: 178,59435%
- Other services
- 2023: 2,7502024: 3,77637%
- Lab and pathology
- 2023: 3,1022024: 3,54214%
- Tests and treatments
- 2023: 1,6292024: 1,94419%
- Office and hospital visits
- 2023: 1,0672024: 1,064No change
- Surgery
- 2023: 4882024: 4733%
- Imaging
- 2023: 2282024: 17623%
Dr. Louie compared with the Maryland median for rheumatologists, 2024
- Dr. Louie
- Maryland median
- Medicare services
- 189,569vs 3,91548.4 times
- Medicare patients
- 855vs 3002.9 times
- Part D claims
- 1,597vs 7822.0 times
Medians across 168 rheumatologists in Maryland with Dmand AI profiles that report each measure.
Dr. Louie'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. Louie and other rheumatologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Grant H. Louie treated 855 Medicare patients in 2024, average age 73
CMS counts 855 Medicare patients who saw Dr. Louie in 2024. The largest group is 65 to 74, with 418 patients. 75% of them have arthritis, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Louie's median patient age at 62, with 76% women.
Dr. Louie's Medicare patients by age, 2024
Dr. Louie's Medicare patients by sex, 2024
- Women66778%
- Men18822%
Chronic conditions among Dr. Louie's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure69%
- Osteoporosis46%
- Anxiety30%
- Ischemic heart disease30%
- Mood disorders29%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Louie's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women76%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grant H. Louie wrote 1,876 Medicare Part D claims in 2024
In 2024, Dr. Louie wrote 1,876 Medicare Part D claims for 296 patients. 91% of them were for generic drugs. CMS names the drug for 1,597 of them, across 29 drugs with 11 or more claims each, at $513,675 in total drug cost. In 2023, CMS named 1,505 claims across 30 drugs.
Dr. Louie's Part D claims by kind of drug, 2024
- Generic1,700 claims91%
- Brand-name and other176 claims9%
Dr. Louie'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. Louie's Part D claims, 2024
- Opioids8%146 of 1,876 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: 1,5052024: 1,5976%
Drugs named by CMS: 29 in 2024, 30 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. Grant H. Louie scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Louie for performance year 2024, reported as part of a group. Dr. Louie accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Louie as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Louie's MIPS scores, performance year 2024
- 86of 100Final score
- 93.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 59of 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. Grant H. Louie has 16 publications on record
Dmand AI links 16 papers to Dr. Louie, published from 2009 to 2017. 2010 was the busiest year, with 2. The most frequent topics are Arthritis, Rheumatoid, Socioeconomic Factors and Spondylitis, Ankylosing. Dr. Louie has published most often in Am J Public Health. Dr. Louie's most frequent co-authors are Michael M. Ward, MD, Lora E. Fleming, MD and Alicia M. Hinze, MD.
Dr. Louie's papers by year, 2009 to 2017
Topics Dr. Louie writes about most
- Arthritis, Rheumatoid
- Socioeconomic Factors
- Spondylitis, Ankylosing
Dr. Louie's most frequent co-authors
- Michael M. Ward, MD4 shared papers
- Lora E. Fleming, MD1 shared paper
- Alicia M. Hinze, MD1 shared paper
Recent publications by Dr. Louie
Semin Arthritis Rheum
See who Dr. Louie researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Louie 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. Grant H. Louie has worked on 1 clinical trial
Dmand AI links Dr. Louie to 1 clinical trial. Conditions studied include Arthritis, Rheumatoid and Rheumatic Diseases.
Conditions in Dr. Louie's trials
- Arthritis, Rheumatoid
- Rheumatic Diseases
Investigators on the most trials with Dr. Louie
- Grace E. Ahn, MD1 shared trial
- Howard W. Hauptman, MD1 shared trial
- Kundan Anil Karkhanis, MD1 shared trial
Recent clinical trials with Dr. Louie
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Grant H. Louie received $21,433 in industry payments from 2016 to 2024
CMS Open Payments shows 305 general payments to Dr. Louie from 32 drug and device companies from 2016 to 2024. Consulting fees make up the largest share, 65% of the total. Janssen Pharmaceuticals, Inc paid the most, $10,966.
General payments to Dr. Louie by program year, 2016 to 2024
General payments to Dr. Louie by kind, 2016 to 2024
- Consulting fees$13,85065%
- Food and beverage$5,38525%
- Travel and lodging$2,0239%
- Education$1761%
Companies that paid Dr. Louie the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Grant H. Louie has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Louie, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Louie
- 2014
- CMS Stage 1 EHR
- 2013
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. Grant H. Louie graduated from Drexel University College Of Medicine
Dr. Louie graduated from Drexel University College Of Medicine in 2001. Dr. Louie is a member of ACR.
- Medical school
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Grant H. Louie accepts plans from 5 insurance carriers
Dr. Louie is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance and CareFirst BlueCross BlueShield. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- CareFirst BlueCross BlueShield
- CMS Medicare
- DE State Medicaid
Plan types Dr. Louie accepts, by number of carriers
- PPO3
- HMO2
- POS2
- EPO1
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Grant H. Louie'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Grant H. Louie
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. Grant H. Louie's NPI number?
Dr. Grant H. Louie's NPI number is 1306013214. It was assigned on May 9, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Grant H. Louie?
Dr. Grant H. Louie is a rheumatologist in Frederick, Maryland. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Grant H. Louie practice?
Dr. Louie practices at 161 Thomas Johnson Dr, Frederick, MD 21702. Dr. Louie's primary practice is Arthritis and Rheumatism Associates in Frederick, Maryland. Dmand AI also links Dr. Louie to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Grant H. Louie's office phone number?
The practice phone on file for Dr. Louie is (301) 942-7600.
What is Dr. Grant H. Louie's medical license number?
Dr. Louie holds Maryland license D0071182, one of the licenses on file in 2 states.
Which states has Dr. Grant H. Louie been licensed in?
Dmand AI has state licenses on file for Dr. Louie in Maryland (2010 to 2026) and California (2002 to 2026).
Which hospitals is Dr. Grant H. Louie affiliated with?
Dr. Louie is affiliated with Frederick Health Hospital. Dmand AI links Dr. Louie to 1 more hospital.
What medical group is Dr. Grant H. Louie part of?
Dr. Louie is linked to Amber Hill Therapy Centers. Dmand AI links Dr. Louie to 1 more medical group.
Does Dr. Grant H. Louie accept Medicare?
Yes. CMS data shows Dr. Louie billed Medicare for 189,569 services in 2024, and Dr. Louie accepts Medicare assignment.
Does Dr. Grant H. Louie offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Louie as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Grant H. Louie's MIPS score?
Dr. Louie's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
How many Medicare patients does Dr. Grant H. Louie see?
CMS counts 855 Medicare patients who saw Dr. Louie in 2024, with an average age of 73.
Is Dr. Grant H. Louie board certified?
Yes. Dr. Louie is board certified in rheumatology by the American Board of Internal Medicine.
What services does Dr. Grant H. Louie bill to Medicare?
In 2024, Dr. Louie's most billed Medicare services were injected or infused drug (J3262), injected or infused drug (J3111) and injected or infused drug (J1602).
Where did Dr. Grant H. Louie go to medical school?
Dr. Louie graduated from Drexel University College Of Medicine in 2001.
What drugs does Dr. Grant H. Louie prescribe most?
In 2024 Medicare Part D data, Dr. Louie's most prescribed drugs by claims were Methotrexate, Prednisone and Hydroxychloroquine Sulfate.
Has Dr. Grant H. Louie received payments from drug or device companies?
CMS Open Payments shows $21,433 in general payments to Dr. Louie from 32 companies from 2016 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Grant H. Louie been practicing?
Dr. Louie graduated from medical school in 2001, 25 years ago.
Does Dr. Grant H. Louie do research?
Dmand AI links 16 publications to Dr. Louie, published from 2009 to 2017. Dr. Louie has worked on 1 clinical trial.
Who does Dr. Grant H. Louie publish with?
Dr. Louie's most frequent co-authors are Michael M. Ward, MD (4 shared papers), Lora E. Fleming, MD (1 shared paper) and Alicia M. Hinze, MD (1 shared paper).
What insurance does Dr. Grant H. Louie accept?
Dr. Louie is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance and CareFirst BlueCross BlueShield. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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