John R. Bak, CRNP
- Medicare patients, 2024
- 213
- Part D claims, 2024
- 1,817
- Hospital affiliations
- 3
- Industry payments
- $112
- Medical groups
- 4
- Practice address
- 100 North Academy Avenue, Danville, PA 17822
- Practice phone
- Call (570) 271-6211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Bak'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.
John R. Bak is a nurse practitioner in Danville, Pennsylvania
John Bak practices at Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health.
John Bak's NPI, 1235770702, was assigned on October 4, 2019. John Bak holds Pennsylvania license SP020925.
- NPI
- 1235770702NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608200050
- NPI enumeration date
- October 4, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (570) 271-6211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John R. Bak practices at Geisinger Medical Center in Danville, Pennsylvania
John Bak's primary practice is Geisinger Medical Center, at 100 North Academy Avenue, Danville, PA 17822 in Montour County. The practice phone is (570) 271-6211.
- Geisinger Medical Center100 North Academy Avenue, Danville, PA 17822 · Montour CountyPhone(570) 271-6211
Source: Dmand AI Affiliation Data
John R. Bak is affiliated with 3 sites of care and 4 medical groups
John Bak's primary practice is Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health. John Bak is also affiliated with WellSpan Evangelical Community Hospital. The medical group on file is Geisinger. Dmand AI also links John Bak to 1 more hospital and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John R. Bak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Bak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Geisinger Medical Center | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John R. Bak is one of 2,845 nurse practitioners in Pennsylvania
Nurse practitioner is John Bak's primary specialty in the NPI Registry, under taxonomy code 363L00000X. John Bak is licensed in Pennsylvania.
Specialties and state licenses
- Nurse practitioner, PennsylvaniaPrimary
Nurse practitioners near John Bak
Counts of nurse practitioners 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
John R. Bak treated 213 Medicare patients in 2024, average age 74
CMS counts 213 Medicare patients who saw John Bak in 2024. The largest group is 65 to 74, with 91 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 2.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Bak's median patient age at 60, with 46% women.
John Bak's Medicare patients by age, 2024
John Bak's Medicare patients by sex, 2024
- Women9645%
- Men11755%
Chronic conditions among John Bak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure69%
- Ischemic heart disease60%
- Chronic kidney disease53%
- Diabetes48%
- Atrial fibrillation47%
- Arthritis42%
Share of Medicare patients with each condition. A patient can have several.
John Bak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John R. Bak wrote 1,817 Medicare Part D claims in 2024
In 2024, John Bak wrote 1,817 Medicare Part D claims for 342 patients. 87% of them were for generic drugs.
John Bak's Part D claims by kind of drug, 2024
- Generic1,578 claims87%
- Brand-name239 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John R. Bak offers telehealth to Medicare patients
John Bak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists John Bak as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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John R. Bak received $112 in industry payments in 2025
CMS Open Payments shows 3 general payments to John Bak from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $112.
Companies that paid John Bak 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 John R. Bak'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) |
| 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 John R. Bak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John R. Bak's NPI number?
John R. Bak's NPI number is 1235770702. It was assigned on October 4, 2019, and it is active in the NPI Registry.
What does John R. Bak specialize in?
John R. Bak is a nurse practitioner in Danville, Pennsylvania. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does John R. Bak practice?
John Bak practices at 100 North Academy Avenue, Danville, PA 17822. John Bak's primary practice is Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health. Dmand AI also links John Bak to 1 hospital and 3 medical groups.
What is John R. Bak's office phone number?
The practice phone on file for John Bak is (570) 271-6211.
What is John R. Bak's medical license number?
John Bak holds Pennsylvania license SP020925.
Which hospitals is John R. Bak affiliated with?
John Bak practices at Geisinger Medical Center in Danville, Pennsylvania. John Bak is also affiliated with WellSpan Evangelical Community Hospital. Dmand AI links John Bak to 1 more hospital.
What medical group is John R. Bak part of?
John Bak is linked to Geisinger. Dmand AI links John Bak to 3 more medical groups.
Does John R. Bak accept Medicare?
Yes. CMS lists John Bak as accepting Medicare assignment.
Does John R. Bak offer telehealth?
Yes. The CMS Doctors and Clinicians file lists John Bak as offering telehealth services.
How many Medicare patients does John R. Bak see?
CMS counts 213 Medicare patients who saw John Bak in 2024, with an average age of 74.
Has John R. Bak received payments from drug or device companies?
CMS Open Payments shows $112 in general payments to John Bak from 1 company from 2025 to 2025. The largest total came from Abiomed.
How long has John R. Bak been practicing?
John Bak graduated from medical school in 2019, 7 years ago.
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