Dr. Peggy J. Simpson, MD
- Medicare services, 2024
- 1,966
- Medicare patients, 2024
- 385
- Part D claims, 2024
- 10,470
- Hospital affiliations
- 5
- Industry payments
- $14
- Practice address
- 700 South Park St, Madison, WI 53715
- Practice phone
- Call (608) 251-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Simpson's professional email, personal email and mobile number
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Dr. Peggy J. Simpson is an internist in Madison, Wisconsin
Dr. Simpson practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care.
Dr. Simpson's NPI, 1770749418, was assigned on August 1, 2008. Dr. Simpson holds Wisconsin license 55859-020.
- NPI
- 1770749418NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315118320
- NPI enumeration date
- August 1, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (608) 251-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peggy J. Simpson practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin
Dr. Simpson's primary practice is SSM Health St. Mary's Hospital - Madison, at 700 South Park St, Madison, WI 53715 in Dane County. The practice phone is (608) 251-6100.
- SSM Health St. Mary's Hospital - Madison700 South Park St, Madison, WI 53715 · Dane CountyPhone(608) 251-6100
Source: Dmand AI Affiliation Data
Dr. Peggy J. Simpson is affiliated with 9 sites of care and 1 medical group
Dr. Simpson's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dr. Simpson is also affiliated with University Hospital. The medical group on file is SSM Health Dean Medical Group. Dmand AI also links Dr. Simpson to 3 more hospitals, 2 home health agencies, 1 group practice or clinic and 1 hospice, 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. Peggy J. Simpson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simpson practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - Madison | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Peggy J. Simpson is one of 1,675 internists in Wisconsin
Internal medicine is Dr. Simpson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Simpson is licensed in Wisconsin.
Specialties and state licenses
- Internal medicine, WisconsinPrimary
Internists near Dr. Simpson
Counts of internists 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. Peggy J. Simpson billed Medicare for 1,966 services in 2024
CMS data shows 1,966 Medicare services from Dr. Simpson across 20 procedure codes in 2024, for 385 Medicare patients. Medicare paid $96,091 for them. Every service was in an office.
Dr. Simpson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5312024: 5768%
- Surgery
- 2023: 5102024: 57212%
- Other services
- 2023: 3432024: 342No change
- Lab and pathology
- 2023: 2162024: 30240%
- Tests and treatments
- 2023: 1572024: 17411%
Dr. Simpson compared with the Wisconsin median for internists, 2024
- Dr. Simpson
- Wisconsin median
- Medicare services
- 1,966vs 4574.3 times
- Medicare patients
- 385vs 19993% above
- Part D claims
- 9,737vs 43322.5 times
Medians across 1,658 internists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Simpson'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. Simpson and other internists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peggy J. Simpson treated 385 Medicare patients in 2024, average age 73
CMS counts 385 Medicare patients who saw Dr. Simpson in 2024. The largest group is 65 to 74, with 187 patients. 75% of them have high cholesterol, and 58% have high blood pressure. 13% are also on Medicaid. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Simpson's median patient age at 72, with 74% women.
Dr. Simpson's Medicare patients by age, 2024
Dr. Simpson's Medicare patients by sex, 2024
- Women28474%
- Men10126%
Chronic conditions among Dr. Simpson's Medicare patients, 2024
- High cholesterol75%
- High blood pressure58%
- Arthritis30%
- Anxiety26%
- Diabetes26%
- Mood disorders26%
- Depression22%
- Chronic kidney disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simpson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women74%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peggy J. Simpson wrote 10,470 Medicare Part D claims in 2024
In 2024, Dr. Simpson wrote 10,470 Medicare Part D claims for 645 patients. 87% of them were for generic drugs. CMS names the drug for 9,737 of them, across 163 drugs with 11 or more claims each, at $712,007 in total drug cost. In 2023, CMS named 9,224 claims across 158 drugs.
Dr. Simpson's Part D claims by kind of drug, 2024
- Generic9,093 claims87%
- Brand-name1,301 claims12%
- Other76 claims1%
Dr. Simpson'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. Simpson's Part D claims, 2024
- Opioids3%263 of 10,470 claims
- Antibiotics1%141 of 10,470 claims
- Antipsychotics, patients 65 and over1%77 of 10,470 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: 9,2242024: 9,7376%
Drugs named by CMS: 163 in 2024, 158 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. Peggy J. Simpson offers telehealth to Medicare patients
Dr. Simpson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Simpson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Peggy J. Simpson received $14 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Simpson from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Supernus Pharmaceuticals, Inc. paid the most, $14.
Companies that paid Dr. Simpson the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Peggy J. Simpson'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Peggy J. Simpson
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. Peggy J. Simpson's NPI number?
Dr. Peggy J. Simpson's NPI number is 1770749418. It was assigned on August 1, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Peggy J. Simpson?
Dr. Peggy J. Simpson is an internist in Madison, Wisconsin. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Peggy J. Simpson practice?
Dr. Simpson practices at 700 South Park St, Madison, WI 53715. Dr. Simpson's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dmand AI also links Dr. Simpson to 3 hospitals, 2 home health agencies, 1 group practice or clinic and 1 hospice.
What is Dr. Peggy J. Simpson's office phone number?
The practice phone on file for Dr. Simpson is (608) 251-6100.
What is Dr. Peggy J. Simpson's medical license number?
Dr. Simpson holds Wisconsin license 55859-020.
Which hospitals is Dr. Peggy J. Simpson affiliated with?
Dr. Simpson practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin. Dr. Simpson is also affiliated with University Hospital. Dmand AI links Dr. Simpson to 3 more hospitals.
What medical group is Dr. Peggy J. Simpson part of?
Dr. Simpson is linked to SSM Health Dean Medical Group.
Does Dr. Peggy J. Simpson accept Medicare?
Yes. CMS data shows Dr. Simpson billed Medicare for 1,966 services in 2024, and Dr. Simpson accepts Medicare assignment.
Does Dr. Peggy J. Simpson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Simpson as offering telehealth services.
How many Medicare patients does Dr. Peggy J. Simpson see?
CMS counts 385 Medicare patients who saw Dr. Simpson in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Peggy J. Simpson bill to Medicare?
In 2024, Dr. Simpson's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and medicare service (G0439).
What drugs does Dr. Peggy J. Simpson prescribe most?
In 2024 Medicare Part D data, Dr. Simpson's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Omeprazole.
Has Dr. Peggy J. Simpson received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Simpson from 1 company from 2016 to 2016. The largest total came from Supernus Pharmaceuticals, Inc.
How long has Dr. Peggy J. Simpson been practicing?
Dr. Simpson graduated from medical school in 2009, 17 years ago.
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