Katie J. Stemmerich, PA-C
- Medicare patients, 2024
- 246
- Part D claims, 2024
- 5,468
- MIPS score, 2024
- 94
- Hospital affiliations
- 2
- Industry payments
- $60
- Practice address
- 631 North Broad Street Ext., Grove City, PA 16127
- Practice phone
- Call (724) 450-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Katie Stemmerich's professional email, personal email and mobile number
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Katie J. Stemmerich is a physician assistant in Grove City, Pennsylvania
Katie Stemmerich practices at AHN Grove City Hospital in Grove City, Pennsylvania, part of Highmark Health.
Katie Stemmerich's NPI, 1538500319, was assigned on July 9, 2013. Katie Stemmerich holds Pennsylvania license MA056176.
- NPI
- 1538500319NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183934722
- NPI enumeration date
- July 9, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (724) 450-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Katie J. Stemmerich practices at AHN Grove City Hospital in Grove City, Pennsylvania
Katie Stemmerich's primary practice is AHN Grove City Hospital, at 631 North Broad Street Ext., Grove City, PA 16127 in Mercer County. The practice phone is (724) 450-7000.
- AHN Grove City Hospital631 North Broad Street Ext., Grove City, PA 16127 · Mercer CountyPhone(724) 450-7000
Source: Dmand AI Affiliation Data
Katie J. Stemmerich is affiliated with 4 sites of care and 1 medical group
Katie Stemmerich's primary practice is AHN Grove City Hospital in Grove City, Pennsylvania, part of Highmark Health. Katie Stemmerich is also affiliated with Butler Memorial Hospital. The medical group on file is AHN Primary Care - Family Med Associates at H+W Pavilion Bethel Park. Dmand AI also links Katie Stemmerich to 1 more group practice or clinic and 1 home health agency, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Katie J. Stemmerich's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Katie Stemmerich practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| AHN Grove City Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Katie J. Stemmerich is one of 6,491 physician assistants in Pennsylvania
Physician assistant is Katie Stemmerich's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Katie Stemmerich is licensed in Pennsylvania.
Specialties and state licenses
- Physician assistant, PennsylvaniaPrimary
Physician assistants near Katie Stemmerich
Counts of physician assistants 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
Katie J. Stemmerich treated 246 Medicare patients in 2024, average age 73
CMS counts 246 Medicare patients who saw Katie Stemmerich in 2024. The largest group is 65 to 74, with 101 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Katie Stemmerich's median patient age at 73, with 59% women.
Katie Stemmerich's Medicare patients by age, 2024
Katie Stemmerich's Medicare patients by sex, 2024
- Women14258%
- Men10442%
Chronic conditions among Katie Stemmerich's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Arthritis45%
- Diabetes28%
- Anxiety25%
- Chronic kidney disease20%
- Mood disorders19%
- COPD17%
Share of Medicare patients with each condition. A patient can have several.
Katie Stemmerich's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Katie J. Stemmerich wrote 5,468 Medicare Part D claims in 2024
In 2024, Katie Stemmerich wrote 5,468 Medicare Part D claims for 906 patients. 85% of them were for generic drugs.
Katie Stemmerich's Part D claims by kind of drug, 2024
- Generic4,650 claims85%
- Brand-name778 claims14%
- Other40 claims1%
Drug classes CMS tracks in Katie Stemmerich's Part D claims, 2024
- Opioids3%161 of 5,468 claims
- Antibiotics7%370 of 5,468 claims
- Antipsychotics, patients 65 and over0%20 of 5,468 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Katie J. Stemmerich scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Katie Stemmerich for performance year 2024, reported through an alternative payment model (APM). Katie Stemmerich accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Katie Stemmerich as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Katie Stemmerich's MIPS scores, performance year 2024
- 94of 100Final score
- 85of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Katie J. Stemmerich received $60 in industry payments in 2025
CMS Open Payments shows 4 general payments to Katie Stemmerich from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $36.
Companies that paid Katie Stemmerich the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Katie J. Stemmerich'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 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 (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) |
| 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 Katie J. Stemmerich
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Katie J. Stemmerich's NPI number?
Katie J. Stemmerich's NPI number is 1538500319. It was assigned on July 9, 2013, and it is active in the NPI Registry.
What does Katie J. Stemmerich specialize in?
Katie J. Stemmerich is a physician assistant in Grove City, Pennsylvania. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Katie J. Stemmerich practice?
Katie Stemmerich practices at 631 North Broad Street Ext., Grove City, PA 16127. Katie Stemmerich's primary practice is AHN Grove City Hospital in Grove City, Pennsylvania, part of Highmark Health. Dmand AI also links Katie Stemmerich to 1 group practice or clinic and 1 home health agency.
What is Katie J. Stemmerich's office phone number?
The practice phone on file for Katie Stemmerich is (724) 450-7000.
What is Katie J. Stemmerich's medical license number?
Katie Stemmerich holds Pennsylvania license MA056176.
Which hospitals is Katie J. Stemmerich affiliated with?
Katie Stemmerich practices at AHN Grove City Hospital in Grove City, Pennsylvania. Katie Stemmerich is also affiliated with Butler Memorial Hospital.
What medical group is Katie J. Stemmerich part of?
Katie Stemmerich is linked to AHN Primary Care - Family Med Associates at H+W Pavilion Bethel Park.
Does Katie J. Stemmerich accept Medicare?
Yes. CMS lists Katie Stemmerich as accepting Medicare assignment.
Does Katie J. Stemmerich offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Katie Stemmerich as offering telehealth services.
What is Katie J. Stemmerich's MIPS score?
Katie Stemmerich's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Katie J. Stemmerich see?
CMS counts 246 Medicare patients who saw Katie Stemmerich in 2024, with an average age of 73.
Has Katie J. Stemmerich received payments from drug or device companies?
CMS Open Payments shows $60 in general payments to Katie Stemmerich from 2 companies from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Katie J. Stemmerich been practicing?
Katie Stemmerich graduated from medical school in 2013, 13 years ago.
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