Mary Mckay Dittler , PA-C
Physician Assistant โข Newark, DE
4755 Ogletown Stanton Road, Suite 5a43
Newark, DE 197182200
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 October 3, 2017; this date does not establish years in practice.
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Published CMS data list 153 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.
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Published Part B service records, 2021:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 38 service units.
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 31 service units.
- 99217 โ Hospital observation care on day of discharge: 22 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 all 7 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 25 Medicare Part D prescriptions, including refills, in 2020.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2020. Published rows only; this is not a quality measure.
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Published Part D records, 2020:
- Prednisone โ 14 prescription fills, including refills.
- Atorvastatin Calcium โ 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2020. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 55 in 2019 to 153 in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019โ2021.
Practice Location & Contact Primary Location
4755 Ogletown Stanton Road
Suite 5a43
Newark, DE 197182200
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 Baltimore, MD. 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.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2017
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $15,876 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 $12,480 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
26 standardized 30-day fills in 2020
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
$132 in 2020
The total cost of these prescriptions in 2020, 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, 2020.
Open Payments general payments, program year 2023
All general payments: $101.27 across 3 records.
By nature of payment
- Food and Beverage: $101.27 across 3 records.
Reporting-company totals
- Ethicon Inc.: $64.93 across 2 records.
- ProgenaCare Global, LLC: $36.34 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 2023 (published June 30, 2026).
Years since graduation
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 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
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.
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)
Mary Dittler 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 Mary Dittler 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
Comparisons use 2024 data. The latest CMS data for Mary Dittler are from 2021.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Mary Dittler are from 2020.
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 178% from 55 in 2019 to 153 in 2021.
- 2019: 55
- 2020: 199
- 2021: 153
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Medicare-allowed amount
Medicare-allowed amount increased 194% from $5,407 in 2019 to $15,876 in 2021.
- 2019: $5,407
- 2020: $19,852
- 2021: $15,876
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Paid by Medicare
Paid by Medicare increased 190% from $4,308 in 2019 to $12,480 in 2021.
- 2019: $4,308
- 2020: $15,896
- 2021: $12,480
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 19% from 31 in 2018 to 25 in 2020.
- 2018: 31
- 2019: 13
- 2020: 25
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30-day fills
30-day fills decreased 16% from 31 in 2018 to 26 in 2020.
- 2018: 31
- 2019: 13
- 2020: 26
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Part D drug cost
Part D drug cost went from $135 in 2018 to $132 in 2020.
- 2018: $135
- 2019: $31
- 2020: $132
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $30.07 in 2021 to $101.27 in 2023.
- 2021: $30.07
- 2022: $556.33
- 2023: $101.27
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2020), CMS Open Payments (2023), 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 2023 (payments made January 1 โ December 31, 2023): fewer than 11 records totaling $101.27.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Ethicon Inc. |
Food and Beverage
In-kind items and services
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STRATAFIX | General | $43.07 |
| ProgenaCare Global, LLC |
Food and Beverage
Cash or cash equivalent
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โ | General | $36.34 |
| Ethicon Inc. |
Food and Beverage
In-kind items and services
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VISTASEAL | General | $21.86 |
Source: CMS Open Payments, program year 2023, 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 |
|---|---|---|---|---|
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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38 | 31 | $173.00 | $65.70 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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31 | 28 | $250.00 | $94.41 |
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99217
Hospital observation care on day of discharge
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22 | 22 | $176.00 | $66.22 |
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99220
Hospital observation care, typically 70 minutes
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20 | 20 | $445.00 | $166.02 |
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99219
Hospital observation care, typically 50 minutes
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15 | 15 | $325.00 | $122.85 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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14 | 14 | $486.00 | $183.20 |
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99239
Hospital discharge day management, more than 30 minutes
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13 | 13 | $260.00 | $97.53 |
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 2020.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 14 | 105 | $45.17 | 14 |
| Atorvastatin Calcium | Atorvastatin Calcium | 11 | 360 | $86.39 | 11 |
Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-08-19NUCC 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.
NUCC Taxonomy Code: 363AM0700X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20250903001799
DE
5395098537
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
5601 Loch Raven Blvd
Baltimore, MD 212392945
Phone: 8556335655
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)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Hospitalist
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 4755 OGLETOWN STANTON ROAD, SUITE 5A43, NEWARK, DE 197182200 (Tel: 3026230188)
Recorded as MARY DITTLER, PA-C
NPI status registered as active in NPPES database
Registered at 5601 LOCH RAVEN BLVD, BALTIMORE, MD 212392945 (Tel: 8556335655)
Registered at 3517 GOUGH ST, BALTIMORE, MD 212242310
Recorded as MARY MCKAY, PA-C
Physician Assistant (license number reported to NPPES: MD C0006603)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Newark
- Karleigh Greiss, PA-C
- Kevin Sweeney, PA-C
- Gabriella Zaccone
- John Webb, PA-C
- Rebecca Katkocin, PA-C
- Kelli Cutsail, PA-C
Mailing Address
3517 Gough St
Baltimore, MD 212242310