Seth William Callahan , PA-C
Physician Assistant โข Newark, DE
4051 Ogletown Rd Ste 103
Newark, DE 197133101
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 July 19, 2021; this date does not establish years in practice.
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Published CMS data list 227 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:
- 23395 โ Relocation of one muscle of shoulder or upper arm: 93 service units.
- 23472 โ Prosthetic repair of shoulder joint, total shoulder: 87 service units.
- 27447 โ Replacement of knee joint, both sides of knee: 18 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 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 739 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:
- Oxycodone Hcl โ 180 prescription fills, including refills.
- Gabapentin โ 168 prescription fills, including refills.
- Celecoxib โ 87 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 12 records in the table ยท 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 Physician Assistant in Newark, DE (2024, 156 clinicians with data). Median for this group: 166. Middle half: 48 to 431.
Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: 270. Middle half: 87 to 688.
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 23 in 2021 to 227 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021โ2024.
Practice Location & Contact Primary Location
4051 Ogletown Rd Ste 103
Newark, DE 197133101
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Agape Physical Therapy And Sports Rehabilitation Lp; First State Orthopaedics Pa. 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
2021
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
135 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 $29,692 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 $23,164 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
742 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
$6,237 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: $710.87 across 14 records.
By nature of payment
- Food and Beverage: $710.87 across 14 records.
Reporting-company totals (3 largest of 7)
- Davol Inc.: $205.84 across 3 records.
- Eclipse Technology Solutions Inc.: $190.41 across 3 records.
- Stryker Corporation: $93.72 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
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 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
2021
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)
Seth Callahan 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 Seth Callahan 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 Newark and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Physician Assistant in Newark, DE (2024, 156 clinicians with data). Median for this group: 166. Middle half: 48 to 431.
Close to the middle for clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: 270. Middle half: 87 to 688.
Medicare-allowed amount
A higher Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Newark, DE (2024, 156 clinicians with data). Median for this group: $15,000. Middle half: $5,532 to $29,347.
A higher Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: $20,935. Middle half: $8,185 to $49,614.
Paid by Medicare
A higher Medicare payment amount than 75% of clinicians listed under Physician Assistant in Newark, DE (2024, 156 clinicians with data). Median for this group: $11,537. Middle half: $4,187 to $21,813.
A higher Medicare payment amount than 60% of clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: $15,940. Middle half: $6,131 to $36,829.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Newark, DE (2024, 117 clinicians with data). Median for this group: 150. Middle half: 44 to 413.
More Part D prescriptions than 70% of clinicians listed under Physician Assistant in Delaware (2024, 323 clinicians with data). Median for this group: 250. Middle half: 92 to 740.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Physician Assistant in Newark, DE (2024, 117 clinicians with data). Median for this group: $1,330. Middle half: $246 to $15,543.
Close to the middle for clinicians listed under Physician Assistant in Delaware (2024, 323 clinicians with data). Median for this group: $3,978. Middle half: $611 to $67,690.
319 active clinicians are listed under Physician Assistant with a practice address in Newark, DE (695 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Newark
10.3% of these 319 clinicians have the CMS telehealth indicator.
69.9% of these 319 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 887% from 23 in 2021 to 227 in 2024.
- 2021: 23
- 2022: 168
- 2023: 200
- 2024: 227
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Medicare-allowed amount
Medicare-allowed amount increased 772% from $3,407 in 2021 to $29,692 in 2024.
- 2021: $3,407
- 2022: $25,233
- 2023: $29,514
- 2024: $29,692
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Paid by Medicare
Paid by Medicare increased 750% from $2,725 in 2021 to $23,164 in 2024.
- 2021: $2,725
- 2022: $20,090
- 2023: $23,202
- 2024: $23,164
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 403% from 147 in 2021 to 739 in 2024.
- 2021: 147
- 2022: 723
- 2023: 756
- 2024: 739
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30-day fills
30-day fills increased 405% from 147 in 2021 to 742 in 2024.
- 2021: 147
- 2022: 725
- 2023: 759
- 2024: 742
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Part D drug cost
Part D drug cost increased 324% from $1,470 in 2021 to $6,237 in 2024.
- 2021: $1,470
- 2022: $12,392
- 2023: $13,639
- 2024: $6,237
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 78% from $3,239.01 in 2021 to $710.87 in 2025.
- 2021: $3,239.01
- 2022: $1,343.29
- 2023: $1,179.60
- 2024: $781.17
- 2025: $710.87
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): 14 records totaling $710.87.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Davol Inc. |
Food and Beverage
In-kind items and services
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ARISTA | General | $159.78 |
| Eclipse Technology Solutions Inc. |
Food and Beverage
In-kind items and services
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โ | General | $86.13 |
| Eclipse Technology Solutions Inc. |
Food and Beverage
In-kind items and services
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โ | General | $75.60 |
| AXOGEN |
Food and Beverage
In-kind items and services
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โ | General | $59.50 |
| Baxter Healthcare |
Food and Beverage
In-kind items and services
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PERCLOT | General | $53.37 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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MAKO | General | $51.42 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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MAKO | General | $42.30 |
| Pacira Pharmaceuticals Incorporated |
Food and Beverage
In-kind items and services
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Exparel | General | $34.39 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $31.90 |
| Eclipse Technology Solutions Inc. |
Food and Beverage
In-kind items and services
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โ | General | $28.68 |
| Davol Inc. |
Food and Beverage
In-kind items and services
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Avitene Ultrafoam | General | $26.45 |
| Pacira Pharmaceuticals Incorporated |
Food and Beverage
In-kind items and services
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Exparel | General | $23.74 |
| Davol Inc. |
Food and Beverage
In-kind items and services
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ARISTA | General | $19.61 |
| Pacira Pharmaceuticals Incorporated |
Food and Beverage
In-kind items and services
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Iovera | General | $18.00 |
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 2020โ2023 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, 2021โ2024; 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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23395
Relocation of one muscle of shoulder or upper arm
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93 | 92 | $974.00 | $93.00 |
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23472
Prosthetic repair of shoulder joint, total shoulder
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87 | 85 | $1220.00 | $188.29 |
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27447
Replacement of knee joint, both sides of knee
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18 | 18 | $1881.00 | $167.38 |
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64910
Repair of nerve with graft
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17 | 17 | $692.00 | $52.91 |
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20610
Aspiration and/or injection of fluid from large joint
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12 | 11 | $304.00 | $62.44 |
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 |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 180 | 871 | $986.06 | 129 |
| Gabapentin | Gabapentin | 168 | 5,099 | $780.16 | 141 |
| Celecoxib | Celecoxib | 87 | 2,580 | $2,034.59 | 83 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 68 | 859 | $1,063.57 | 63 |
| Methylprednisolone | Methylprednisolone | 63 | 378 | $429.20 | 58 |
| Meloxicam | Meloxicam | 42 | 1,260 | $340.31 | 30 |
| Tramadol Hcl | Tramadol Hcl | 33 | 201 | $81.44 | 14 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 24 | 295 | $162.71 | 23 |
| Cephalexin | Cephalexin | 22 | 37 | $43.67 | 14 |
| Mupirocin | Mupirocin | 22 | 225 | $152.67 | 22 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 16 | 217 | $63.93 | 15 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 14 | 75 | $98.59 | 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: 2024-01-25NUCC 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
I20210831000837
DE
6901202936
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
First State Orthopaedics Pa
601 Tower Ln, Middletown, DE 197091763
First State Orthopaedics Pa
4051 Ogletown Rd, Newark, DE 197133101
Phone: 3027312888
First State Orthopaedics Pa
4745 Ogletown Stanton Rd, Newark, DE 197132074
Phone: 3027312888
Agape Physical Therapy And Sports Rehabilitation Lp
12 Newport Dr, Forest Hill, MD 210501758
First State Orthopaedics Pa
4051 Ogletown Stanton Rd, Newark, DE 197133101
Phone: 3027312888
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery - Sports Medicine
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Physician Assistant (Certified)
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner
Orthopaedic Surgery
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 4051 OGLETOWN RD STE 103, NEWARK, DE 197133101 (Tel: 3027312888)
Registered at 211 EXECUTIVE DR STE 11, NEWARK, DE 197023358 (Tel: 3027312888)
NPI status registered as active in NPPES database
Registered at 4051 OGLETOWN-STANTON ROAD, SUITE 102 & 103, NEWARK, DE 19713 (Tel: 3023223400)
Registered at 1600 HELEN DR APT 110, NEWARK, DE 197021686 (Tel: 5705744780)
Recorded as SETH CALLAHAN, PA-C
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Newark
- Megan Leonard, PA
- Ian Blizzard, PA-C
- Paula Smith, PA-C
- Alexandra Krochta, PA
- Taylor Shanosky, PHYSICIAN ASSISTANT
- Nicholas Chappelear
Mailing Address
211 Executive Dr Ste 11
Newark, DE 197023358
Phone: 3027312888