Gregory N. Geissinger, PA-C
- Medicare patients, 2024
- 31
- Part D claims, 2024
- 30
- MIPS score, 2024
- 81
- Hospital affiliations
- 4
- Medical groups
- 4
- Practice address
- 425 Pine Ridge Blvd, Wausau, WI 54401
- Practice phone
- Call (715) 847-2019
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aspirus Spine & Neurosciences Institute
Wausau, Wisconsin
Find Gregory Geissinger'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.
Gregory N. Geissinger is a physician assistant in Wausau, Wisconsin
Gregory Geissinger practices at Aspirus Spine & Neurosciences Institute in Wausau, Wisconsin.
Gregory Geissinger's NPI, 1699882969, was assigned on August 24, 2006. Gregory Geissinger holds Wisconsin license 1225.
- NPI
- 1699882969NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941480735
- NPI enumeration date
- August 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 847-2019
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory N. Geissinger practices at Aspirus Spine & Neurosciences Institute in Wausau, Wisconsin
Gregory Geissinger's primary practice is Aspirus Spine & Neurosciences Institute, at 425 Pine Ridge Blvd, Wausau, WI 54401 in Marathon County. The practice phone is (715) 847-2019.
- Aspirus Spine & Neurosciences Institute425 Pine Ridge Blvd, Wausau, WI 54401 · Marathon CountyPhone(715) 847-2019
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gregory N. Geissinger is affiliated with 9 sites of care and 4 medical groups
Gregory Geissinger's primary practice is Aspirus Spine & Neurosciences Institute in Wausau, Wisconsin. Gregory Geissinger is also affiliated with Aspirus Wausau Hospital. The medical group on file is Marshfield Clinic Health System. Dmand AI also links Gregory Geissinger to 3 more hospitals, 4 group practices and clinics and 3 medical groups, 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 Gregory N. Geissinger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Geissinger practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aspirus Spine & Neurosciences Institute | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory N. Geissinger is one of 3,127 physician assistants in Wisconsin
Physician assistant is Gregory Geissinger's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Gregory Geissinger is licensed in Wisconsin.
Specialties and state licenses
- Physician assistant, WisconsinPrimary
Physician assistants near Gregory Geissinger
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
Gregory N. Geissinger treated 31 Medicare patients in 2024, average age 72
CMS counts 31 Medicare patients who saw Gregory Geissinger in 2024. The largest group is 65 to 74, with 12 patients. 75% of them have high blood pressure, and 61% have high cholesterol. Their average risk score is 1.69, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Gregory Geissinger's median patient age at 70, with 56% women.
Gregory Geissinger's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Geissinger's Medicare patients by sex, 2024
- Women1858%
- Men1342%
Chronic conditions among Gregory Geissinger's Medicare patients, 2024
- High blood pressure75%
- High cholesterol61%
- Mood disorders48%
- Chronic kidney disease45%
- Depression45%
- Anxiety39%
- Stroke or TIA39%
- Diabetes35%
Share of Medicare patients with each condition. A patient can have several.
Gregory Geissinger's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory N. Geissinger wrote 30 Medicare Part D claims in 2024
In 2024, Gregory Geissinger wrote 30 Medicare Part D claims for 20 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Gregory Geissinger's Part D claims, 2024
- Opioids53%16 of 30 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
Gregory N. Geissinger scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Gregory Geissinger for performance year 2024, reported as part of a group. Gregory Geissinger accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Gregory Geissinger's MIPS scores, performance year 2024
- 81of 100Final score
- 55.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 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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Sources for Gregory N. Geissinger'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 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) |
| 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 Gregory N. Geissinger
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory N. Geissinger's NPI number?
Gregory N. Geissinger's NPI number is 1699882969. It was assigned on August 24, 2006, and it is active in the NPI Registry.
What does Gregory N. Geissinger specialize in?
Gregory N. Geissinger is a physician assistant in Wausau, Wisconsin. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Gregory N. Geissinger practice?
Gregory Geissinger practices at 425 Pine Ridge Blvd, Wausau, WI 54401. Gregory Geissinger's primary practice is Aspirus Spine & Neurosciences Institute in Wausau, Wisconsin. Dmand AI also links Gregory Geissinger to 3 hospitals, 4 group practices and clinics and 3 medical groups.
What is Gregory N. Geissinger's office phone number?
The practice phone on file for Gregory Geissinger is (715) 847-2019.
What is Gregory N. Geissinger's medical license number?
Gregory Geissinger holds Wisconsin license 1225.
Which hospitals is Gregory N. Geissinger affiliated with?
Gregory Geissinger is affiliated with Aspirus Wausau Hospital. Dmand AI links Gregory Geissinger to 3 more hospitals.
What medical group is Gregory N. Geissinger part of?
Gregory Geissinger is linked to Marshfield Clinic Health System. Dmand AI links Gregory Geissinger to 3 more medical groups.
Does Gregory N. Geissinger accept Medicare?
Yes. CMS lists Gregory Geissinger as accepting Medicare assignment.
What is Gregory N. Geissinger's MIPS score?
Gregory Geissinger's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Gregory N. Geissinger see?
CMS counts 31 Medicare patients who saw Gregory Geissinger in 2024, with an average age of 72.
How long has Gregory N. Geissinger been practicing?
Gregory Geissinger graduated from medical school in 2000, 26 years ago.
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