John Patrick Ohsann , PA-C
Physician Assistant โข Frederick, MD
110 Baughmans Ln Ste 140
Frederick, MD 217024649
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on November 6, 2017; this date does not establish years in practice.
-
Published CMS data list 53 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Published rows only; this is not a quality measure.
-
Published Part B service records, 2021:
- 99213 โ Established patient outpatient office visit: 18 service units.
- 99214 โ Established patient outpatient office visit: 18 service units.
- 82962 โ Blood glucose (sugar) test performed by hand-held instrument: 17 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 69 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2021. Published rows only; this is not a quality measure.
-
Published Part D records, 2021:
- Levetiracetam โ 23 prescription fills, including refills.
- Amlodipine Besylate โ 19 prescription fills, including refills.
- Donepezil Hcl โ 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
-
Medicare Part B services went from 34 in 2019 to 53 in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019โ2021.
Practice Location & Contact Primary Location
110 Baughmans Ln Ste 140
Frederick, MD 217024649
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Frederick, MD; San Francisco, CA. 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 $3,605 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $2,412 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
110 standardized 30-day fills in 2021
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
$859 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Open Payments general payments, program year 2021
All general payments: $54.20 across 3 records.
By nature of payment
- Food and Beverage: $54.20 across 3 records.
Reporting-company totals
- UPSHER-SMITH LABORATORIES LLC: $18.37 across 1 record.
- AbbVie Inc.: $17.95 across 1 record.
- Pfizer Inc.: $17.88 across 1 record.
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 2021 (published June 30, 2026).
NPI first issued
2017
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.
Compared with the same specialty in Frederick and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for John Ohsann are from 2021.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for John Ohsann are from 2021.
106 active clinicians are listed under Physician Assistant with a practice address in Frederick, MD (3,225 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Frederick
23.6% of these 106 clinicians have the CMS telehealth indicator.
69.8% of these 106 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.
-
Medicare Part B services
Medicare Part B services increased 56% from 34 in 2019 to 53 in 2021.
- 2019: 34
- 2021: 53
-
Medicare-allowed amount
Medicare-allowed amount increased 15% from $3,135 in 2019 to $3,605 in 2021.
- 2019: $3,135
- 2021: $3,605
-
Paid by Medicare
Paid by Medicare stayed about the same: $2,422 in 2019 and $2,412 in 2021.
- 2019: $2,422
- 2021: $2,412
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 30% from 98 in 2019 to 69 in 2021.
- 2019: 98
- 2020: 227
- 2021: 69
-
30-day fills
30-day fills decreased 26% from 148 in 2019 to 110 in 2021.
- 2019: 148
- 2020: 348
- 2021: 110
-
Part D drug cost
Part D drug cost decreased 24% from $1,127 in 2019 to $859 in 2021.
- 2019: $1,127
- 2020: $27,332
- 2021: $859
-
Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2021 only.
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2021), 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 2021 (payments made January 1 โ December 31, 2021): fewer than 11 records totaling $54.20.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| UPSHER-SMITH LABORATORIES LLC |
Food and Beverage
In-kind items and services
|
TOSYMRA | General | $18.37 |
| AbbVie Inc. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $17.95 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
ELIQUIS | General | $17.88 |
Source: CMS Open Payments, program year 2021, 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 2018โ2020 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, 2019โ2021; 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 |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
18 | 17 | $206.00 | $81.64 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
18 | 15 | $304.00 | $115.56 |
|
82962
Blood glucose (sugar) test performed by hand-held instrument
|
17 | 12 | $8.00 | $3.28 |
Source: CMS Part B by Provider and Service, 2021; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levetiracetam | Levetiracetam | 23 | 1,115 | $345.94 | โ |
| Amlodipine Besylate | Amlodipine Besylate | 19 | 690 | $108.94 | โ |
| Donepezil Hcl | Donepezil Hcl | 15 | 754 | $101.23 | โ |
| Gabapentin | Gabapentin | 12 | 698 | $302.79 | โ |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-01-09NUCC 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.
Secondary Practice Locations
998 Divisadero St Apt 105
San Francisco, CA 941154403
Phone: 8045028986
196 Thomas Johnson Dr Ste 120
Frederick, MD 217024521
Phone: 2405663130
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner - Family
Certified Registered Nurse Practitioner
Nurse Practitioner - Family
Advanced Practice Registered Nurse - Certified Nurse Practitioner
Nurse Practitioner - Family
Doctor of Nursing Practice, Certified Registered Nurse Practitioner, Family Nurse Practitioner (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 110 BAUGHMANS LN STE 140, FREDERICK, MD 217024649 (Tel: 2402151138)
Recorded as JOHN OHSANN, PA-C
Physician Assistant (license number reported to NPPES: MD C0006814)
Registered at 196 THOMAS JOHNSON DR STE 120, FREDERICK, MD 217024521 (Tel: 2405663130)
Registered at 196 THOMAS JOHNSON DR STE 120, FREDERICK, MD 217024521 (Tel: 2405663130)
NPI status registered as active in NPPES database
Registered at 998 DIVISADERO ST APT 105, SAN FRANCISCO, CA 941154403 (Tel: 8045028986)
Registered at 998 DIVISADERO ST APT 105, SAN FRANCISCO, CA 941154403 (Tel: 8045028986)
Recorded as JOHN OHSANN
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Frederick
- Carly Vance
- Erin Mcclure, PA-C
- Jessica Anderson, PA-C
- Aurielle Martin, PA-C
- Brooke Velasquez, PA-C
- Amanda Golden
Mailing Address
196 Thomas Johnson Dr Ste 120
Frederick, MD 217024521
Phone: 2405663130