Dr. John Christopher Henry , MD
Specialist • Frederick, MD
174 Thomas Johnson Dr, Suite 204
Frederick, MD 217024423
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 February 17, 2006; this date does not establish years in practice.
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Published CMS data list 1,244 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 343 service units.
- 99204 — New patient outpatient office visit: 218 service units.
- 92083 — Exam of visual field with extended testing: 201 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 17 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 732 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost — 202 prescription fills, including refills.
- Erythromycin (Erythromycin Base) — 159 prescription fills, including refills.
- Cephalexin — 80 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 17 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Specialist in Maryland (2024, 222 clinicians with data). Median for this group: 1,498. Middle half: 497 to 3,299.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,236 in 2020 to 1,244 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
174 Thomas Johnson Dr
Suite 204
Frederick, MD 217024423
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Georgetown University School Of Medicine
1988
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
441 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 – by Provider, 2024.
Medicare-allowed amount
About $172,923 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 – by Provider and Service, 2024.
Paid by Medicare
About $134,073 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 – by Provider and Service, 2024.
30-day fills
1,052 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
$20,151 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $383.30 across 11 records.
By nature of payment
- Food and Beverage: $383.30 across 11 records.
Reporting-company totals
- Amgen Inc.: $274.23 across 9 records.
- Tarsus Pharmaceuticals, Inc.: $109.07 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).
Years since graduation
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 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, “Does your provider accept Medicare as full payment?”
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)
Dr. Henry 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 Dr. Henry 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 Frederick and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Specialist in Maryland (2024, 222 clinicians with data). Median for this group: 1,498. Middle half: 497 to 3,299.
Too few clinicians listed under Specialist in Frederick have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Specialist in Maryland (2024, 222 clinicians with data). Median for this group: $126,390. Middle half: $43,642 to $293,732.
Too few clinicians listed under Specialist in Frederick have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Specialist in Maryland (2024, 222 clinicians with data). Median for this group: $94,726. Middle half: $33,185 to $213,378.
Too few clinicians listed under Specialist in Frederick have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Specialist in Maryland (2024, 214 clinicians with data). Median for this group: 420. Middle half: 95 to 1,119.
Too few clinicians listed under Specialist in Frederick have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Specialist in Maryland (2024, 214 clinicians with data). Median for this group: $38,054. Middle half: $2,484 to $213,707.
Too few clinicians listed under Specialist in Frederick have Medicare Part D data for 2024 to compare.
23 active clinicians are listed under Specialist with a practice address in Frederick, MD (940 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Frederick
0% of these 23 clinicians have the CMS telehealth indicator.
43.5% of these 23 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 stayed about the same: 1,236 in 2020 and 1,244 in 2024.
- 2020: 1,236
- 2021: 1,530
- 2022: 1,259
- 2023: 1,447
- 2024: 1,244
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Medicare-allowed amount
Medicare-allowed amount increased 56% from $110,971 in 2020 to $172,923 in 2024.
- 2020: $110,971
- 2021: $180,933
- 2022: $141,549
- 2023: $175,676
- 2024: $172,923
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Paid by Medicare
Paid by Medicare increased 66% from $80,925 in 2020 to $134,073 in 2024.
- 2020: $80,925
- 2021: $138,692
- 2022: $103,499
- 2023: $131,879
- 2024: $134,073
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 37% from 536 in 2020 to 732 in 2024.
- 2020: 536
- 2021: 504
- 2022: 520
- 2023: 529
- 2024: 732
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30-day fills
30-day fills increased 24% from 850 in 2020 to 1,052 in 2024.
- 2020: 850
- 2021: 822
- 2022: 872
- 2023: 828
- 2024: 1,052
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Part D drug cost
Part D drug cost varied from year to year: $19,493 in 2020 and $20,151 in 2024.
- 2020: $19,493
- 2021: $21,157
- 2022: $14,036
- 2023: $13,501
- 2024: $20,151
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $35.66 in 2021 to $383.30 in 2025.
- 2021: $35.66
- 2022: $43.24
- 2023: $162.92
- 2024: $283.12
- 2025: $383.30
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 · 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 – December 31, 2025): 11 records totaling $383.30.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
TEPEZZA | General | $101.29 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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XDEMVY | General | $78.77 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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XDEMVY | General | $30.30 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $29.35 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $28.24 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
TEPEZZA | General | $24.27 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
TEPEZZA | General | $23.68 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $21.02 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $19.03 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $14.13 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $13.22 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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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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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343 | 198 | $175.00 | $134.34 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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218 | 218 | $280.00 | $175.53 |
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92083
Exam of visual field with extended testing
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201 | 116 | $130.00 | $66.33 |
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92201
Extended exam of the back part of the eye with retinal drawing
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134 | 128 | $45.00 | $25.87 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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63 | 63 | $180.00 | $117.66 |
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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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62 | 53 | $125.00 | $94.80 |
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92060
Exam to measure eye deviation and range of motion
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41 | 34 | $100.00 | $66.02 |
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67840
Removal of growth of eyelid
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37 | 34 | $464.86 | $301.75 |
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92133
Imaging of optic nerve
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24 | 23 | $90.00 | $35.42 |
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92202
Extended exam of the back part of the eye with optic nerve drawing
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24 | 21 | $40.00 | $16.24 |
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68840
Probing of nasal tear duct
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18 | 17 | $347.22 | $171.84 |
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92020
Exam of the internal drainage system of eye
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15 | 14 | $45.00 | $28.77 |
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14060
Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less
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14 | 14 | $1714.29 | $769.23 |
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67904
Repair of tendon of upper eyelid
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14 | 12 | $2428.57 | $823.24 |
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67904
Repair of tendon of upper eyelid
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13 | 13 | $3576.92 | $908.03 |
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15823
Removal of excessive skin and fat of upper eyelid
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12 | 12 | $3733.33 | $435.11 |
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92082
Exam of visual field with intermediate testing
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11 | 11 | $100.00 | $48.49 |
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 |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 202 | 10,082 | $1,853.19 | 48 |
| Erythromycin | Erythromycin Base | 159 | 2,183 | $1,589.50 | 110 |
| Cephalexin | Cephalexin | 80 | 797 | $493.39 | 68 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 62 | 3,810 | $1,231.36 | 14 |
| Diazepam | Diazepam | 28 | 37 | $18.31 | 27 |
| Timolol Maleate | Timolol Maleate | 26 | 1,673 | $199.61 | — |
| Brimonidine Tartrate | Brimonidine Tartrate | 23 | 1,374 | $3,940.39 | — |
| Pyridostigmine Bromide Er | Pyridostigmine Bromide | 19 | 996 | $5,374.50 | — |
| Prednisone | Prednisone | 18 | 245 | $67.91 | 13 |
| Dorzolamide Hcl | Dorzolamide Hcl | 18 | 1,080 | $200.25 | — |
| Fluorometholone | Fluorometholone | 18 | 613 | $1,815.82 | — |
| Doxycycline Hyclate | Doxycycline Hyclate | 16 | 400 | $248.76 | 13 |
| Neomycin-Polymyxin-Dexameth | Neomycin/Polymyxin B/Dexametha | 14 | 247 | $131.76 | 12 |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 13 | 43 | $50.29 | 11 |
| Cyclosporine | Cyclosporine | 13 | 405 | $2,608.65 | — |
| Valacyclovir | Valacyclovir Hcl | 12 | 432 | $170.16 | — |
| Acetazolamide Er | Acetazolamide | 11 | 330 | $157.52 | — |
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
NUCC Taxonomy Code: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20200630000055
VA
0749258416
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dentist - General Practice
Doctor of Dental Surgery
Psychiatry & Neurology - Neurology
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Neurology
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated February 17, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Specialists in Frederick
- Dr. Mark Chilton, MD
- Dr. Robert Jackson, MD
- Dr. Jeffrey Gilsdorf, MD
- Dr. David Kossoff, MD
- Dr. Laura Copaken, MD
- Dr. Ali Afrookteh, MD, MACP
More public profiles in Maryland
Directory navigation, in NPI number order.
- Terry Prahl, CNM Advanced Practice Midwife · Columbia
- Scott Wright, MD Internal Medicine · Baltimore
- Khuram Khan, MD Ophthalmology - Retina Specialist · Germantown
- Irvin Thomas, MD Anesthesiology · Bethesda
- Olumide Coker, MD Internal Medicine · Largo
- Sidney Pion, MD Radiology - Diagnostic Radiology · Rockville
- Andrea Wojcik-Elko, PA-C Physician Assistant · Baltimore
- Loveen Puthumana, MD Internal Medicine - Geriatric Medicine · Silver Spring
- Ellen Mcinerney, MD Internal Medicine · Edgewater
- Margaret Eby, MD Emergency Medicine · Baltimore
- Maria Hammill, MD Psychiatry & Neurology - Child & Adolescent Psychiatry · Greenbelt
- Mikhail Gendel, MD Family Medicine - Adult Medicine · Gaithersburg
Mailing Address
174 Thomas Johnson Dr, Suite 204
Frederick, MD 217024423
Phone: 3012282943