John Bak , CRNP
Nurse Practitioner โข Danville, PA
100 N Academy Ave
Danville, PA 178222695
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on October 4, 2019; this date does not establish years in practice.
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Published CMS data list 517 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- G2211 โ Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 164 service units.
- 99213 โ Established patient outpatient office visit: 124 service units.
- G2211 โ Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 57 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 9 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,718 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Spironolactone โ 279 prescription fills, including refills.
- Metoprolol Succinate โ 223 prescription fills, including refills.
- Furosemide โ 218 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 23 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: 293. Middle half: 91 to 462.
More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,785 clinicians with data). Median for this group: 219. Middle half: 83 to 477.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 42 in 2020 to 517 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
100 N Academy Ave
Danville, PA 178222695
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Lewisburg, PA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 3 distinct group names: Evangelical Medical Services Organization; Geisinger Clinic; Geisinger-Hm Joint Venture Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2019
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
213 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $22,949 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $17,671 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
3,817 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$242,764 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $112.49 across 3 records.
By nature of payment
- Food and Beverage: $112.49 across 3 records.
Reporting-company totals
- ABIOMED: $112.49 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
7 years (graduated 2019)
CMS Doctors and Clinicians data list 2019 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2019
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
John Bak has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists John Bak as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Danville and Pennsylvania
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: 293. Middle half: 91 to 462.
More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,785 clinicians with data). Median for this group: 219. Middle half: 83 to 477.
Medicare-allowed amount
A higher Medicare-allowed amount than 60% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: $18,908. Middle half: $5,679 to $30,031.
A higher Medicare-allowed amount than 60% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,785 clinicians with data). Median for this group: $16,817. Middle half: $6,508 to $34,616.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: $13,603. Middle half: $4,228 to $21,876.
A higher Medicare payment amount than 60% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,785 clinicians with data). Median for this group: $12,551. Middle half: $4,770 to $25,713.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: 289. Middle half: 95 to 1,384.
More Part D prescriptions than 75% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,916 clinicians with data). Median for this group: 436. Middle half: 111 to 1,584.
Part D drug cost
A higher Part D drug cost than 70% of clinicians listed under Nurse Practitioner in Danville, PA (2024, 75 clinicians with data). Median for this group: $27,001. Middle half: $3,422 to $276,268.
A higher Part D drug cost than 75% of clinicians listed under Nurse Practitioner in Pennsylvania (2024, 1,916 clinicians with data). Median for this group: $33,211. Middle half: $1,952 to $187,775.
135 active clinicians are listed under Nurse Practitioner with a practice address in Danville, PA (3,919 in Pennsylvania).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Danville
31.1% of these 135 clinicians have the CMS telehealth indicator.
66.7% of these 135 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 1131% from 42 in 2020 to 517 in 2024.
- 2020: 42
- 2021: 41
- 2023: 168
- 2024: 517
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Medicare-allowed amount
Medicare-allowed amount increased 384% from $4,746 in 2020 to $22,949 in 2024.
- 2020: $4,746
- 2021: $3,949
- 2023: $11,822
- 2024: $22,949
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Paid by Medicare
Paid by Medicare increased 366% from $3,792 in 2020 to $17,671 in 2024.
- 2020: $3,792
- 2021: $3,146
- 2023: $9,276
- 2024: $17,671
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 232% from 517 in 2023 to 1,718 in 2024.
- 2023: 517
- 2024: 1,718
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30-day fills
30-day fills increased 265% from 1,045 in 2023 to 3,817 in 2024.
- 2023: 1,045
- 2024: 3,817
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Part D drug cost
Part D drug cost increased 504% from $40,216 in 2023 to $242,764 in 2024.
- 2023: $40,216
- 2024: $242,764
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $42.92 in 2022 to $112.49 in 2025.
- 2022: $42.92
- 2024: $113.92
- 2025: $112.49
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $112.49.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABIOMED |
Food and Beverage
In-kind items and services
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โ | General | $52.49 |
| ABIOMED |
Food and Beverage
In-kind items and services
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โ | General | $45.00 |
| ABIOMED |
Food and Beverage
In-kind items and services
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โ | General | $15.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2020โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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164 | 110 | $42.00 | $12.83 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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124 | 90 | $213.63 | $52.23 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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57 | 46 | $42.00 | $13.04 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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48 | 39 | $324.06 | $77.66 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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44 | 23 | $163.82 | $63.62 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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38 | 33 | $213.16 | $69.66 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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19 | 19 | $323.42 | $103.47 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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12 | 12 | $310.67 | $100.29 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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11 | 11 | $449.55 | $116.49 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Spironolactone | Spironolactone | 279 | 20,981 | $2,346.00 | 107 |
| Metoprolol Succinate | Metoprolol Succinate | 223 | 16,342 | $4,035.66 | 76 |
| Furosemide | Furosemide | 218 | 10,217 | $1,584.19 | 53 |
| Torsemide | Torsemide | 139 | 9,181 | $7,386.42 | 60 |
| Atorvastatin Calcium | Atorvastatin Calcium | 133 | 10,123 | $1,957.45 | 52 |
| Lisinopril | Lisinopril | 101 | 7,605 | $795.72 | 31 |
| Jardiance | Empagliflozin | 95 | 5,607 | $105,151.28 | 30 |
| Losartan Potassium | Losartan Potassium | 65 | 3,670 | $762.67 | 25 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 51 | 3,436 | $599.83 | 17 |
| Entresto | Sacubitril/Valsartan | 48 | 2,269 | $48,491.24 | 17 |
| Metoprolol Tartrate | Metoprolol Tartrate | 43 | 2,820 | $297.68 | 14 |
| Carvedilol | Carvedilol | 43 | 2,566 | $348.23 | 14 |
| Eliquis | Apixaban | 43 | 3,152 | $57,862.11 | 17 |
| Potassium Chloride | Potassium Chloride | 32 | 1,446 | $702.55 | 11 |
| Amlodipine Besylate | Amlodipine Besylate | 31 | 1,734 | $210.15 | โ |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 31 | 2,178 | $425.81 | 11 |
| Ezetimibe | Ezetimibe | 29 | 1,895 | $625.68 | โ |
| Nitroglycerin | Nitroglycerin | 27 | 472 | $222.85 | 19 |
| Amiodarone Hcl | Amiodarone Hcl | 24 | 1,980 | $401.35 | โ |
| Clopidogrel | Clopidogrel Bisulfate | 22 | 1,980 | $396.89 | 11 |
| Warfarin Sodium | Warfarin Sodium | 16 | 1,398 | $374.19 | โ |
| Repatha Sureclick | Evolocumab | 14 | 392 | $7,582.29 | โ |
| Klor-Con M10 | Potassium Chloride | 11 | 783 | $203.58 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-02-03NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LC0200X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20191218002016
PA
6608200050
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Evangelical Medical Services Organization
1 Hospital Dr, Lewisburg, PA 178379350
Phone: 5705222641
Geisinger Clinic
100 N Academy Ave, Danville, PA 178229800
Phone: 5702716211
Geisinger-Hm Joint Venture Llc
255 Route 220 Hwy, Muncy, PA 177567569
Phone: 5703082600
Secondary Practice Locations
3 Hospital Dr Ste 206
Lewisburg, PA 178379394
Phone: 5705244141
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Cardiovascular Disease
MDMPH
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Internal Medicine - Cardiovascular Disease
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Nurse Practitioner (license number reported to NPPES: PA SP020925)
Registered at 100 N ACADEMY AVE, DANVILLE, PA 178222695 (Tel: 5702716523)
Registered at 100 N ACADEMY AVE, DANVILLE, PA 178224903 (Tel: 5702716144)
Recorded as JOHN BAK, CRNP
Nurse Practitioner (license number reported to NPPES: NJ 26NJ01244000)
Registered at 57 US HIGHWAY 46 STE 201, HACKETTSTOWN, NJ 078402695 (Tel: 9084417201)
Registered at PO BOX 416457, BOSTON, MA 022416457 (Tel: 8443621735)
Recorded as JOHN BAK
NPI status registered as active in NPPES database
Registered at 700 HIGH ST, WILLIAMSPORT, PA 177013100 (Tel: 5703211000)
Registered at 1201 GRAMPIAN BLVD, WILLIAMSPORT, PA 177011900 (Tel: 5703213580)
Recorded as JOHN BAK, CRNP
Nurse Practitioner (license number reported to NPPES: PA SP020925)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Danville
- Rachel Marouchoc, CRNP
- Chantelle Salwocki, CRNP
- Lori Parke, CRNP
- Terri Shoemaker, CRNP
- Brittany Thorson, CRNP
- Angela Seanard, CRNP
Mailing Address
100 N Academy Ave
Danville, PA 178224903
Phone: 5702716144