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Robert Michael Holtrup , PA-C

Physician Assistant • Dayton, OH

Active NPI 1669604609 Individual Practitioner Male Practitioner
Practice location in NPPES

1100 Salem Ave
Dayton, OH 454065144

Call 9372765901 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1100 Salem Ave

Dayton, OH 454065144

Telephone 9372765901
Fax 9372764006
Before You Book

Paying without insurance? Prepare a cost-estimate request

Ask about interpreters and office accessibility

Organization at the Same NPPES Address or Phone
Salem Pharmacy Facility NPI 1134118854

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

What Public CMS Data Show

These CMS figures cover limited populations and published records; they are not quality ratings or medical advice.

Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.

30-day fills

6,181 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

$291,927 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: $1,593.86 across 80 records.

By nature of payment

  • Food and Beverage: $1,593.86 across 80 records.

Reporting-company totals (3 largest of 20)

  • AstraZeneca Pharmaceuticals LP: $418.12 across 17 records.
  • ABBVIE INC.: $298.87 across 17 records.
  • Novo Nordisk Inc: $225.40 across 13 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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

NPI first issued

2009

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, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Compared with the same specialty in Dayton and Ohio

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 Dayton, OH (2024, 107 clinicians with data). Median for this group: 250. Middle half: 64 to 675.

More Part D prescriptions than 95% of clinicians listed under Physician Assistant in Ohio (2024, 2,821 clinicians with data). Median for this group: 212. Middle half: 71 to 708.

Part D drug cost

A higher Part D drug cost than 85% of clinicians listed under Physician Assistant in Dayton, OH (2024, 107 clinicians with data). Median for this group: $2,796. Middle half: $557 to $22,056.

A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Ohio (2024, 2,821 clinicians with data). Median for this group: $2,158. Middle half: $495 to $43,005.

250 active clinicians are listed under Physician Assistant with a practice address in Dayton, OH (5,329 in Ohio).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Dayton

5.2% of these 250 clinicians have the CMS telehealth indicator.

62% of these 250 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 D prescriptions

    Medicare Part D prescriptions varied from year to year: 4,081 in 2015 and 4,327 in 2024.

    • 2015: 4,081
    • 2016: 4,737
    • 2017: 348
    • 2023: 44
    • 2024: 4,327

  • 30-day fills

    30-day fills increased 40% from 4,407 in 2015 to 6,181 in 2024.

    • 2015: 4,407
    • 2016: 5,128
    • 2017: 448
    • 2023: 76
    • 2024: 6,181

  • Part D drug cost

    Part D drug cost increased 89% from $154,367 in 2015 to $291,927 in 2024.

    • 2015: $154,367
    • 2016: $208,749
    • 2017: $17,402
    • 2023: $513
    • 2024: $291,927

  • Industry payments (Open Payments)

    Industry payments (Open Payments) went from $221.51 in 2021 to $1,593.86 in 2025.

    • 2021: $221.51
    • 2022: $166.58
    • 2023: $272.97
    • 2024: $1,589.75
    • 2025: $1,593.86

Sources: 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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 80 records totaling $1,593.86.

Manufacturer Payment Nature Product Type Amount ($)
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 BREZTRI General $124.81
CeQur Corporation
Food and Beverage
Cash or cash equivalent
 CeQur Simplicity General $71.56
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $50.63
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $46.17
ABBVIE INC.
Food and Beverage
In-kind items and services
 VRAYLAR General $31.99
Dexcom, Inc.
Food and Beverage
In-kind items and services
 Dexcom G6 Transmitter General $31.15
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $27.96
Novo Nordisk Inc
Food and Beverage
In-kind items and services
 Wegovy General $26.86
Medtronic, Inc.
Food and Beverage
In-kind items and services
 VENASEAL General $26.21
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $24.78
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 BREZTRI General $24.62
Novo Nordisk Inc
Food and Beverage
In-kind items and services
 Wegovy General $23.58
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 BREZTRI General $23.38
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 AIRSUPRA General $23.36
Novo Nordisk Inc
Food and Beverage
In-kind items and services
 Wegovy General $23.00
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
Food and Beverage
In-kind items and services
 CAPLYTA General $22.80
Dexcom, Inc.
Food and Beverage
In-kind items and services
 Dexcom G6 Transmitter General $22.79
Novo Nordisk Inc
Food and Beverage
In-kind items and services
 Wegovy General $22.48
Mannkind Corporation
Food and Beverage
In-kind items and services
 AFREZZA General $22.18
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 — General $21.93
Dexcom, Inc.
Food and Beverage
In-kind items and services
 Dexcom G6 Transmitter General $21.60
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 BREZTRI General $21.33
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
 BREZTRI General $21.24
Exact Sciences Corporation
Food and Beverage
In-kind items and services
 Cologuard Collection Kit General $20.36
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
 TRELEGY ELLIPTA General $20.18

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

A reported payment does not necessarily indicate wrongdoing; clinicians can dispute a record with CMS.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Amlodipine Besylate Amlodipine Besylate 296 15,888 $595.53 118
Albuterol Sulfate Hfa Albuterol Sulfate 278 7,081 $6,414.16 116
Atorvastatin Calcium Atorvastatin Calcium 209 11,400 $1,155.45 84
Lisinopril Lisinopril 153 8,532 $532.29 67
Losartan Potassium Losartan Potassium 148 8,520 $617.18 54
Omeprazole Omeprazole 118 4,891 $615.74 43
Fluticasone Propionate Fluticasone Propionate 104 3,420 $1,120.87 45
Famotidine Famotidine 93 3,385 $741.24 31
Metoprolol Tartrate Metoprolol Tartrate 92 5,069 $378.90 34
Simvastatin Simvastatin 87 4,900 $338.35 35
Potassium Chloride Potassium Chloride 77 3,060 $1,040.95 26
Levothyroxine Sodium Levothyroxine Sodium 76 4,190 $600.77 30
Metformin Hcl Metformin Hcl 76 3,569 $221.89 30
Furosemide Furosemide 74 3,379 $121.41 28
Pantoprazole Sodium Pantoprazole Sodium 72 3,756 $639.44 30
Hydrochlorothiazide Hydrochlorothiazide 71 3,720 $156.38 32
Tamsulosin Hcl Tamsulosin Hcl 71 2,760 $525.74 22
Lantus Solostar Insulin Glargine,hum.Rec.Anlog 69 2,966 $6,526.13 25
Montelukast Sodium Montelukast Sodium 67 3,090 $527.01 28
Sertraline Hcl Sertraline Hcl 60 2,108 $197.49 13
Metoprolol Succinate Metoprolol Succinate 60 3,160 $617.61 27
Methocarbamol Methocarbamol 60 1,484 $466.23 38
Ibuprofen Ibuprofen 59 1,498 $518.36 28
Tizanidine Hcl Tizanidine Hcl 56 1,689 $306.51 28
Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide 54 2,520 $400.09 20

(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

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

License # reported to NPPES OH 50.000527

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: State Medical Board of Ohio.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

2 listed
Dr. Martin Schear , MD

Family Medicine

NPI 1801885355

Doctor of Medicine (M.D.)

Dr. Scott Shaw , MD

Family Medicine

NPI 1326037870

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated August 09, 2009.

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.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1669604609
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 09, 2009
Last Update: August 09, 2009
Sole Proprietor: Yes
Update or Correct Profile

Other Physician Assistants in Dayton

All Physician Assistants in Dayton

Mailing Address

1100 Salem Ave

Dayton, OH 454065144

Phone: 9372765901

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.