Mark Ryan , PA-C
Physician Assistant โข Northampton, MA
6 Hatfield St
Northampton, MA 010601556
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 June 4, 2019; this date does not establish years in practice.
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Published CMS data list 109 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Published rows only; this is not a quality measure.
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Published Part B service records, 2023:
- 80307 โ Testing for presence of drug, by chemistry analyzers: 54 service units.
- 99213 โ Established patient outpatient office visit: 40 service units.
- G0480 โ Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms: 15 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 985 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 96 prescription fills, including refills.
- Lisinopril โ 85 prescription fills, including refills.
- Losartan Potassium โ 47 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 40 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 95% of clinicians listed under Physician Assistant in Northampton, MA (2024, 15 clinicians with data). Median for this group: 94. Middle half: 49 to 188.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: 175. Middle half: 52 to 564.
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 56 in 2020 to 109 in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2023.
Practice Location & Contact Primary Location
6 Hatfield St
Northampton, MA 010601556
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 Amherst, MA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $7,984 in 2023
The total amount Medicare approved for these services in 2023. 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, 2023.
Paid by Medicare
About $6,657 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, 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, 2023.
30-day fills
2,068 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
$99,382 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: $626.58 across 29 records.
By nature of payment
- Food and Beverage: $626.58 across 29 records.
Reporting-company totals (3 largest of 17)
- ABBVIE INC.: $102.10 across 5 records.
- Exact Sciences Corporation: $44.47 across 2 records.
- Merck Sharp & Dohme LLC: $44.24 across 2 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).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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 Ryan 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 Ryan 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 Northampton and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Physician Assistant in Northampton, MA (2024, 15 clinicians with data). Median for this group: 94. Middle half: 49 to 188.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: 175. Middle half: 52 to 564.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Physician Assistant in Northampton, MA (2024, 15 clinicians with data). Median for this group: $799. Middle half: $283 to $11,598.
A higher Part D drug cost than 80% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: $2,484. Middle half: $458 to $50,541.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Mark Ryan are from 2023.
28 active clinicians are listed under Physician Assistant with a practice address in Northampton, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Northampton
0% of these 28 clinicians have the CMS telehealth indicator.
32.1% of these 28 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 95% from 56 in 2020 to 109 in 2023.
- 2020: 56
- 2021: 138
- 2022: 142
- 2023: 109
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Medicare-allowed amount
Medicare-allowed amount increased 122% from $3,600 in 2020 to $7,984 in 2023.
- 2020: $3,600
- 2021: $7,705
- 2022: $9,765
- 2023: $7,984
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Paid by Medicare
Paid by Medicare increased 102% from $3,290 in 2020 to $6,657 in 2023.
- 2020: $3,290
- 2021: $7,067
- 2022: $8,462
- 2023: $6,657
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 895% from 99 in 2020 to 985 in 2024.
- 2020: 99
- 2021: 432
- 2022: 911
- 2023: 925
- 2024: 985
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30-day fills
30-day fills increased 1409% from 137 in 2020 to 2,068 in 2024.
- 2020: 137
- 2021: 668
- 2022: 1,518
- 2023: 1,752
- 2024: 2,068
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Part D drug cost
Part D drug cost increased 3198% from $3,013 in 2020 to $99,382 in 2024.
- 2020: $3,013
- 2021: $31,487
- 2022: $99,506
- 2023: $79,678
- 2024: $99,382
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $171.13 in 2021 to $626.58 in 2025.
- 2021: $171.13
- 2022: $255.18
- 2023: $280.82
- 2024: $563.32
- 2025: $626.58
Sources: CMS Medicare Physician & Other Practitioners (2023), 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): 29 records totaling $626.58.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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VOWST | General | $34.23 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
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Veozah | General | $32.32 |
| Alkermes, Inc. |
Food and Beverage
In-kind items and services
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VIVITROL | General | $28.66 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $27.64 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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CAMZYOS | General | $26.07 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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SHINGRIX | General | $24.98 |
| Indivior Inc. |
Food and Beverage
In-kind items and services
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SUBLOCADE | General | $24.80 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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โ | General | $24.42 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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โ | General | $24.25 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
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XIFAXAN | General | $23.99 |
| Axsome Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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Auvelity | General | $23.36 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $22.50 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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M-M-R II | General | $22.46 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $22.12 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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ROTATEQ | General | $21.78 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $20.97 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $20.22 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $18.65 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $18.54 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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KISUNLA | General | $17.87 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $17.74 |
| Indivior Inc. |
Food and Beverage
In-kind items and services
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SUBLOCADE | General | $17.67 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $17.63 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $16.65 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $16.59 |
(top 25 shown)
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 2019โ2022 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, 2020โ2023; 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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80307
Testing for presence of drug, by chemistry analyzers
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54 | 18 | $225.00 | $59.77 |
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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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40 | 13 | $160.00 | $76.87 |
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G0480
Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms
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15 | 12 | $250.00 | $112.14 |
Source: CMS Part B by Provider and Service, 2023; 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 | 96 | 8,105 | $2,126.92 | 27 |
| Lisinopril | Lisinopril | 85 | 7,539 | $760.72 | 22 |
| Losartan Potassium | Losartan Potassium | 47 | 3,688 | $948.35 | 12 |
| Amlodipine Besylate | Amlodipine Besylate | 38 | 3,330 | $213.88 | 12 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 35 | 3,030 | $1,333.90 | 13 |
| Fentanyl | Fentanyl | 34 | 499 | $3,043.45 | โ |
| Metformin Hcl | Metformin Hcl | 34 | 2,940 | $248.76 | โ |
| Levothyroxine Sodium | Levothyroxine Sodium | 33 | 2,598 | $297.84 | โ |
| Eliquis | Apixaban | 29 | 2,230 | $42,147.70 | โ |
| Oxycodone Hcl | Oxycodone Hcl | 27 | 408 | $176.55 | โ |
| Buprenorphine-Naloxone | Buprenorphine Hcl/Naloxone Hcl | 27 | 454 | $2,783.74 | โ |
| Testosterone Cypionate | Testosterone Cypionate | 25 | 706 | $297.00 | โ |
| Valsartan | Valsartan | 24 | 1,860 | $846.51 | โ |
| Sertraline Hcl | Sertraline Hcl | 23 | 1,950 | $165.63 | โ |
| Tamsulosin Hcl | Tamsulosin Hcl | 23 | 2,010 | $471.97 | โ |
| Omeprazole | Omeprazole | 22 | 1,241 | $277.06 | โ |
| Zolpidem Tartrate | Zolpidem Tartrate | 22 | 624 | $38.24 | โ |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 20 | 571 | $554.87 | โ |
| Gabapentin | Gabapentin | 19 | 918 | $249.01 | โ |
| Metoprolol Succinate | Metoprolol Succinate | 19 | 1,710 | $320.12 | โ |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 19 | 99 | $131.44 | 16 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 19 | 146 | $148.12 | 16 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 18 | 514 | $139.30 | โ |
| Allopurinol | Allopurinol | 18 | 1,380 | $176.84 | โ |
| Suboxone | Buprenorphine Hcl/Naloxone Hcl | 18 | 280 | $3,753.57 | โ |
(top 25 shown)
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: 2020-02-25NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20200401003155
MA
1658700208
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
17 Research Dr
Amherst, MA 010022788
Phone: 4135498400
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Nurse Practitioner - Family
Family Nurse Practitioner (Certified)
Chiropractor
Doctor of Chiropractic
Family 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 6 HATFIELD ST, NORTHAMPTON, MA 010601556 (Tel: 4135498400)
NPI status registered as active in NPPES database
Registered at 6 HATFIELD ST, NORTHAMPTON, MA 010601556 (Tel: 4135498400)
Registered at 86 LELAND HILL RD, SUTTON, MA 015902914 (Tel: 7742760986)
Recorded as MARK RYAN, PA-C
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Northampton
- Courtney Finnigan, PA-C
- Janet Wholey, PA-C
- Reid Motha, PA-C
- Robert Levine, PA-C
- Aaron Morse, PA-C
- Lauren Sullivan, PA-C
Mailing Address
6 Hatfield St
Northampton, MA 010601556
Phone: 4135498400