Mark A Key , PA
Physician Assistant โข Hershey, PA
500 University Dr
Hershey, PA 170332360
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 December 5, 2006; this date does not establish years in practice.
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Published CMS data list 22 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 33508 โ Harvest of vein using an endoscope: 11 service units.
- 33533 โ Coronary artery bypass using artery graft, 1 graft: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 12 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:
- Atorvastatin Calcium โ 12 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 the full table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 95% of clinicians listed under Physician Assistant in Hershey, PA (2024, 113 clinicians with data). Median for this group: 154. Middle half: 52 to 394.
Fewer Part D prescriptions than 95% of clinicians listed under Physician Assistant in Pennsylvania (2024, 4,373 clinicians with data). Median for this group: 235. Middle half: 69 to 862.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 40 in 2017 to 22 in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2022.
Practice Location & Contact Primary Location
500 University Dr
Hershey, PA 170332360
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 5 distinct additional practice-address records in Lakeland, FL; Leesburg, FL; Mount Dora, FL and 2 more. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 5 distinct group names: Chesapeake Regional Medical Group; Cheyenne Regional Physicians Group Llc; Druid City Physician Services Llc and 2 more. 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
1996
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $2,704 in 2022
The total amount Medicare approved for these services in 2022. 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, 2022.
Paid by Medicare
About $2,167 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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, 2022.
30-day fills
18 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
$54 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $87.14 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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
2006
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
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Mark Key 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 Mark Key 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 Hershey and Pennsylvania
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 95% of clinicians listed under Physician Assistant in Hershey, PA (2024, 113 clinicians with data). Median for this group: 154. Middle half: 52 to 394.
Fewer Part D prescriptions than 95% of clinicians listed under Physician Assistant in Pennsylvania (2024, 4,373 clinicians with data). Median for this group: 235. Middle half: 69 to 862.
Part D drug cost
A lower Part D drug cost than 95% of clinicians listed under Physician Assistant in Hershey, PA (2024, 113 clinicians with data). Median for this group: $2,221. Middle half: $409 to $43,954.
A lower Part D drug cost than 95% of clinicians listed under Physician Assistant in Pennsylvania (2024, 4,373 clinicians with data). Median for this group: $3,681. Middle half: $519 to $94,109.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Mark Key are from 2022.
235 active clinicians are listed under Physician Assistant with a practice address in Hershey, PA (8,021 in Pennsylvania).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Hershey
9.8% of these 235 clinicians have the CMS telehealth indicator.
68.1% of these 235 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 decreased 45% from 40 in 2017 to 22 in 2022.
- 2017: 40
- 2018: 55
- 2019: 75
- 2022: 22
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Medicare-allowed amount
Medicare-allowed amount increased 39% from $1,940 in 2017 to $2,704 in 2022.
- 2017: $1,940
- 2018: $5,293
- 2019: $6,464
- 2022: $2,704
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Paid by Medicare
Paid by Medicare increased 40% from $1,546 in 2017 to $2,167 in 2022.
- 2017: $1,546
- 2018: $4,217
- 2019: $5,168
- 2022: $2,167
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 85% from 80 in 2017 to 12 in 2024.
- 2017: 80
- 2018: 102
- 2019: 126
- 2022: 15
- 2024: 12
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30-day fills
30-day fills decreased 79% from 84 in 2017 to 18 in 2024.
- 2017: 84
- 2018: 111
- 2019: 139
- 2022: 29
- 2024: 18
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Part D drug cost
Part D drug cost went from $411 in 2017 to $54 in 2024.
- 2017: $411
- 2018: $812
- 2019: $922
- 2022: $123
- 2024: $54
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $115.87 in 2021 to $87.14 in 2025.
- 2021: $115.87
- 2022: $33.48
- 2023: $93.51
- 2024: $185.44
- 2025: $87.14
Sources: CMS Medicare Physician & Other Practitioners (2022), 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 $87.14.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Getinge USA Sales, LLC |
Food and Beverage
In-kind items and services
|
VASOVIEW HEMOPRO 2 | General | $87.14 |
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 2016โ2021 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, 2017โ2022; 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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33508
Harvest of vein using an endoscope
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11 | 11 | $10.45 | $2.35 |
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33533
Coronary artery bypass using artery graft, 1 graft
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11 | 11 | $1193.69 | $243.48 |
Source: CMS Part B by Provider and Service, 2022; 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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 12 | 540 | $53.78 | 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: 2025-10-08NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363AS0400X
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363AS0400X
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20260107000000
AL
2769454727
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
Cheyenne Regional Physicians Group Llc
4116 Laramie St, Cheyenne, WY 820011969
Phone: 3076357961
Chesapeake Regional Medical Group
744 Battlefield Blvd N, Chesapeake, VA 233204941
Phone: 7573123132
Northern Arizona Healthcare Corporation
7810 N Us Hwy 89, Flagstaff, AZ 860046255
Phone: 9285228375
Northern Arizona Healthcare Corporation
1200 N Beaver St, Flagstaff, AZ 860013118
Phone: 9282142920
Rmh Medical Group Llc
2006 Health Campus Dr, Rockingham, VA 228018679
Phone: 5406895555
Druid City Physician Services Llc
701 University Blvd E, Tuscaloosa, AL 354017428
Phone: 2057520694
Chesapeake Regional Medical Group
300 Medical Pkwy, Chesapeake, VA 233204985
Northern Arizona Healthcare Corporation
1200 N Beaver St, Flagstaff, AZ 860013118
Chesapeake Regional Medical Group
736 Battlefield Blvd N, Chesapeake, VA 233204941
Phone: 7573126102
Northern Arizona Healthcare Corporation
1215 N Beaver St, Flagstaff, AZ 860013126
Phone: 9287732249
Secondary Practice Locations
17021 Us Highway 441
Mount Dora, FL 327576734
Phone: 3527207999
1324 Lakeland Hills Blvd
Lakeland, FL 338054543
Phone: 8636871100
2006 Health Campus Dr Ste 200
Rockingham, VA 228018679
Phone: 5406895555
600 E Dixie Ave
Leesburg, FL 347485925
Phone: 3523235467
2 Tampa General Cir
Tampa, FL 336063571
Phone: 8138218038
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Internal Medicine - Infectious Disease
Doctor of Osteopathic Medicine (D.O.)
Psychiatry & Neurology - Neurology
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Medicine (M.D.)
Family Medicine - Geriatric Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at PO BOX 858, HERSHEY, PA 170330858 (Tel: 8002431455)
Physician Assistant (license number reported to NPPES: FL PA9112176)
Physician Assistant (license number reported to NPPES: DE C5-0000477)
Physician Assistant (license number reported to NPPES: FL PA9112176)
NPI status registered as active in NPPES database
Registered at 500 UNIVERSITY DR, HERSHEY, PA 170332360 (Tel: 8002431455)
Registered at P.O. BOX 858, MC A410, HERSHEY, PA 170330858 (Tel: 8002431455)
Recorded as MARK KEY, PA
Physician Assistant (license number reported to NPPES: DE C5-0000477)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Hershey
- Lynn Minarchick, PA-C
- Nathan Whitfield, PA-C
- Jared Salyards, PHYSICIAN ASSISTANT
- Kyle Thomas, PA-C
- Haunna Birdsey, PA-C
- Tammy Miller, PA-C
Mailing Address
Po Box 858
Hershey, PA 170330858
Phone: 8002431455