J Clin Rheumatol
Amino Acyl-tRNA SynthetasesAntibodiesArthritis, Rheumatoid
Dr. Gregory Eric Mumm, MD
NPI1548228810PAC ID0840344859
- Medicare services, 2024
- 1,382
- Medicare patients, 2024
- 533
- Part D claims, 2024
- 4,146
- Publications
- 1
- Hospital affiliations
- 5
- Practice address
- 1301 S Cliff Ave, Sioux Falls, SD 57105
- Practice phone
- Call (605) 504-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Avera Medical Group Rheumatology Sioux Falls
Sioux Falls, South Dakota
Find Dr. Mumm'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. Gregory Eric Mumm is a rheumatologist in Sioux Falls, South Dakota
Dr. Mumm practices at Avera Medical Group Rheumatology Sioux Falls in Sioux Falls, South Dakota.
Dr. Mumm's NPI, 1548228810, was assigned on May 3, 2006. Dr. Mumm graduated from University of North Dakota School of Medicine in 2004. Dr. Mumm holds South Dakota license 7481.
NPI and contact details
- NPI
- 1548228810NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840344859
- NPI enumeration date
- May 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (605) 504-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Eric Mumm practices at Avera Medical Group Rheumatology Sioux Falls in Sioux Falls, South Dakota
Dr. Mumm's primary practice is Avera Medical Group Rheumatology Sioux Falls, at 1301 S Cliff Ave, Sioux Falls, SD 57105 in Minnehaha County. The practice phone is (605) 504-1600.
- Avera Medical Group Rheumatology Sioux Falls1301 S Cliff Ave, Sioux Falls, SD 57105 · Minnehaha CountyPhone(605) 504-1600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Eric Mumm is affiliated with 7 sites of care and 1 medical group
Dr. Mumm's primary practice is Avera Medical Group Rheumatology Sioux Falls in Sioux Falls, South Dakota. Dr. Mumm is also affiliated with Avera McKennan Hospital & University Health Center. The medical group on file is Avera McKennan Hospital & University Health Center. Dmand AI also links Dr. Mumm to 4 more hospitals and 1 group practice or clinic, each named with a free account.
Avera Medical Group Rheumatology Sioux FallsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory Eric Mumm's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mumm practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera Medical Group Rheumatology Sioux Falls | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Mumm practices
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Dr. Gregory Eric Mumm is one of 21 rheumatologists in South Dakota
Rheumatology is Dr. Mumm's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dmand AI has Dr. Mumm's licenses on file in 2 states: South Dakota and Wisconsin.
Specialties and state licenses
- Rheumatology, South DakotaPrimary
- Internal medicine, Wisconsin
Rheumatologists near Dr. Mumm
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. Gregory Eric Mumm billed Medicare for 1,382 services in 2024
CMS data shows 1,382 Medicare services from Dr. Mumm across 10 procedure codes in 2024, for 533 Medicare patients. Medicare paid $59,538 for them. Every service was in an office.
Medicare services, 20241,382
Medicare patients533
Paid by Medicare$59,538
Procedure codes10
Dr. Mumm's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7312024: 7888%
- Other services
- 2023: 02024: 474
- Surgery
- 2023: 882024: 12036%
Dr. Mumm compared with the South Dakota median for rheumatologists, 2024
- Dr. Mumm
- South Dakota median
- Medicare services
- 1,382vs 93148% above
- Medicare patients
- 533vs 34057% above
- Part D claims
- 3,932vs 1,8192.2 times
Medians across 22 rheumatologists in South Dakota with Dmand AI profiles that report each measure.
Dr. Mumm'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.
Need commercial claims for Dr. Mumm?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mumm and other rheumatologists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Eric Mumm treated 533 Medicare patients in 2024, average age 73
CMS counts 533 Medicare patients who saw Dr. Mumm in 2024. The largest group is 65 to 74, with 277 patients. 75% of them have arthritis, and 71% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mumm's median patient age at 64, with 60% women.
Medicare patients, 2024533
Average age73
Average risk score1.35
Also on Medicaid7%
Dr. Mumm's Medicare patients by age, 2024
Dr. Mumm's Medicare patients by sex, 2024
- Women33162%
- Men20238%
Chronic conditions among Dr. Mumm's Medicare patients, 2024
- Arthritis75%
- High blood pressure71%
- High cholesterol62%
- Osteoporosis31%
- Diabetes25%
- Chronic kidney disease23%
- Anxiety22%
- Ischemic heart disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mumm's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Eric Mumm wrote 4,146 Medicare Part D claims in 2024
In 2024, Dr. Mumm wrote 4,146 Medicare Part D claims for 553 patients. 81% of them were for generic drugs. CMS names the drug for 3,932 of them, across 45 drugs with 11 or more claims each, at $2,752,715 in total drug cost. In 2023, CMS named 3,414 claims across 36 drugs.
Part D claims, 20244,146
Drugs named by CMS45
Total drug cost$2.8M
Part D patients553
Dr. Mumm's Part D claims by kind of drug, 2024
- Generic3,345 claims81%
- Brand-name784 claims19%
- Other17 claims0%
Dr. Mumm'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. Mumm's Part D claims, 2024
- Opioids2%93 of 4,146 claims
- Antibiotics1%23 of 4,146 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: 3,4142024: 3,93215%
Drugs named by CMS: 45 in 2024, 36 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. Gregory Eric Mumm offers telehealth to Medicare patients
Dr. Mumm accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mumm as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory Eric Mumm has 1 publication on record
Dmand AI links 1 paper to Dr. Mumm.
Papers1
Recent publications by Dr. Mumm
See who Dr. Mumm researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mumm 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. Gregory Eric Mumm received $698 in industry payments from 2018 to 2025
CMS Open Payments shows 30 general payments to Dr. Mumm from 8 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $258.
General payments to Dr. Mumm by program year, 2018 to 2025
Companies that paid Dr. Mumm the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Eric Mumm graduated from University of North Dakota School of Medicine
Dr. Mumm graduated from University of North Dakota School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Eric Mumm'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Gregory Eric Mumm
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. Gregory Eric Mumm's NPI number?
Dr. Gregory Eric Mumm's NPI number is 1548228810. It was assigned on May 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Eric Mumm?
Dr. Gregory Eric Mumm is a rheumatologist in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Gregory Eric Mumm practice?
Dr. Mumm practices at 1301 S Cliff Ave, Sioux Falls, SD 57105. Dr. Mumm's primary practice is Avera Medical Group Rheumatology Sioux Falls in Sioux Falls, South Dakota. Dmand AI also links Dr. Mumm to 4 hospitals and 1 group practice or clinic.
What is Dr. Gregory Eric Mumm's office phone number?
The practice phone on file for Dr. Mumm is (605) 504-1600.
What is Dr. Gregory Eric Mumm's medical license number?
Dr. Mumm holds South Dakota license 7481, one of the licenses on file in 2 states.
Which states has Dr. Gregory Eric Mumm been licensed in?
Dmand AI has state licenses on file for Dr. Mumm in South Dakota and Wisconsin.
Which hospitals is Dr. Gregory Eric Mumm affiliated with?
Dr. Mumm is affiliated with Avera McKennan Hospital & University Health Center. Dmand AI links Dr. Mumm to 4 more hospitals.
What medical group is Dr. Gregory Eric Mumm part of?
Dr. Mumm is linked to Avera McKennan Hospital & University Health Center.
Does Dr. Gregory Eric Mumm accept Medicare?
Yes. CMS data shows Dr. Mumm billed Medicare for 1,382 services in 2024, and Dr. Mumm accepts Medicare assignment.
Does Dr. Gregory Eric Mumm offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mumm as offering telehealth services.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Gregory Eric Mumm see?
CMS counts 533 Medicare patients who saw Dr. Mumm in 2024, with an average age of 73.
What services does Dr. Gregory Eric Mumm bill to Medicare?
In 2024, Dr. Mumm's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99213).
Where did Dr. Gregory Eric Mumm go to medical school?
Dr. Mumm graduated from University of North Dakota School of Medicine in 2004.
What drugs does Dr. Gregory Eric Mumm prescribe most?
In 2024 Medicare Part D data, Dr. Mumm's most prescribed drugs by claims were Methotrexate, Hydroxychloroquine Sulfate and Prednisone.
Has Dr. Gregory Eric Mumm received payments from drug or device companies?
CMS Open Payments shows $698 in general payments to Dr. Mumm from 8 companies from 2018 to 2025. The largest total came from Amgen Inc.
How long has Dr. Gregory Eric Mumm been practicing?
Dr. Mumm graduated from medical school in 2004, 22 years ago.
Does Dr. Gregory Eric Mumm do research?
Dmand AI links 1 publication to Dr. Mumm.
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