Mandy Sian David , PA-C
Physician Assistant โข Baltimore, MD
600 N Wolfe St
Baltimore, MD 212870005
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 May 17, 2006; this date does not establish years in practice.
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Published CMS data list 12 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:
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 12 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 the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 128 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.
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Published Part D records, 2021:
- Hydromorphone Hcl โ 36 prescription fills, including refills.
- Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) โ 27 prescription fills, including refills.
- Oxycodone Hcl โ 19 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 6 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 95% of clinicians listed under Physician Assistant in Baltimore, MD (2024, 471 clinicians with data). Median for this group: 133. Middle half: 56 to 328.
Fewer Medicare Part B services than 95% of clinicians listed under Physician Assistant in Maryland (2024, 1,555 clinicians with data). Median for this group: 282. Middle half: 86 to 792.
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 60 in 2020 to 12 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
600 N Wolfe St
Baltimore, MD 212870005
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 3 distinct group names: Emergency Medicine Associates P.A., P.C.; Johns Hopkins University; University Of Maryland Oncology Associates 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
2005
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
31 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 $1,290 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 $1,028 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
133 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
$150,002 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 2025
All general payments: $52.15 across 2 records.
By nature of payment
- Food and Beverage: $52.15 across 2 records.
Reporting-company totals
- Merck Sharp & Dohme LLC: $27.18 across 1 record.
- TriSalus Life Sciences, Inc.: $24.97 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 2025 (published June 30, 2026).
Years since graduation
21 years (graduated 2005)
CMS Doctors and Clinicians data list 2005 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.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
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)
Mandy David 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 Mandy David 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 Baltimore and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 95% of clinicians listed under Physician Assistant in Baltimore, MD (2024, 471 clinicians with data). Median for this group: 133. Middle half: 56 to 328.
Fewer Medicare Part B services than 95% of clinicians listed under Physician Assistant in Maryland (2024, 1,555 clinicians with data). Median for this group: 282. Middle half: 86 to 792.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Baltimore, MD (2024, 471 clinicians with data). Median for this group: $13,600. Middle half: $5,448 to $27,872.
A lower Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Maryland (2024, 1,555 clinicians with data). Median for this group: $23,780. Middle half: $8,384 to $55,296.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Physician Assistant in Baltimore, MD (2024, 471 clinicians with data). Median for this group: $10,264. Middle half: $4,190 to $21,011.
A lower Medicare payment amount than 95% of clinicians listed under Physician Assistant in Maryland (2024, 1,555 clinicians with data). Median for this group: $17,933. Middle half: $6,264 to $41,140.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Mandy David are from 2021.
1,135 active clinicians are listed under Physician Assistant with a practice address in Baltimore, MD (3,225 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Baltimore
8.5% of these 1,135 clinicians have the CMS telehealth indicator.
41.8% of these 1,135 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 decreased 80% from 60 in 2020 to 12 in 2024.
- 2020: 60
- 2021: 86
- 2022: 11
- 2023: 12
- 2024: 12
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Medicare-allowed amount
Medicare-allowed amount decreased 75% from $5,255 in 2020 to $1,290 in 2024.
- 2020: $5,255
- 2021: $7,455
- 2022: $751
- 2023: $1,968
- 2024: $1,290
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Paid by Medicare
Paid by Medicare decreased 75% from $4,049 in 2020 to $1,028 in 2024.
- 2020: $4,049
- 2021: $5,931
- 2022: $599
- 2023: $1,575
- 2024: $1,028
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 55% from 282 in 2017 to 128 in 2021.
- 2017: 282
- 2018: 390
- 2019: 273
- 2020: 309
- 2021: 128
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30-day fills
30-day fills decreased 53% from 282 in 2017 to 133 in 2021.
- 2017: 282
- 2018: 391
- 2019: 275
- 2020: 315
- 2021: 133
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Part D drug cost
Part D drug cost increased 1264% from $10,996 in 2017 to $150,002 in 2021.
- 2017: $10,996
- 2018: $19,361
- 2019: $23,444
- 2020: $32,051
- 2021: $150,002
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $609.00 in 2021 to $52.15 in 2025.
- 2021: $609.00
- 2024: $39.14
- 2025: $52.15
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2021), 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): fewer than 11 records totaling $52.15.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $27.18 |
| TriSalus Life Sciences, Inc. |
Food and Beverage
In-kind items and services
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TRINAV INFUSION SYSTEM | General | $24.97 |
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 2016โ2023 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, 2017โ2024; 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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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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12 | 11 | $993.58 | $107.53 |
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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydromorphone Hcl | Hydromorphone Hcl | 36 | 304 | $687.75 | โ |
| Buprenorphine-Naloxone | Buprenorphine Hcl/Naloxone Hcl | 27 | 396 | $3,331.66 | 12 |
| Oxycodone Hcl | Oxycodone Hcl | 19 | 119 | $118.40 | 12 |
| Hydroxyurea | Hydroxyurea | 17 | 621 | $335.12 | 12 |
| Oxycontin | Oxycodone Hcl | 16 | 178 | $3,735.97 | โ |
| Oxbryta | Voxelotor | 13 | 390 | $141,793.56 | 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
NUCC 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
I20151020000638
DC
4486667185
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
Johns Hopkins University
600 N Wolf St, Baltimore, MD 212870005
Phone: 4109555000
Emergency Medicine Associates P.a., P.c.
1701 N George Mason Dr, Arlington, VA 222053610
Phone: 7035585000
Johns Hopkins University
5601 Lloch Raven Blvd, Baltimore, MD 212392945
Phone: 4434444714
Johns Hopkins University
600 N Wolfe St, Baltimore, MD 212870005
Phone: 4105024340
Johns Hopkins University
600 N Wolf St, Baltimore, MD 212870005
Phone: 4109555000
University Of Maryland Oncology Associates Pa
22 S Green St, Baltimore, MD 212011544
Phone: 4103281230
Emergency Medicine Associates P.a., P.c.
8118 Good Luck Rd, Lanham, MD 207063574
Phone: 3304934443
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Radiology - Radiation Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Advanced Heart Failure and Transplant Cardiology
Doctor of Medicine (M.D.)
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated May 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 Physician Assistants in Baltimore
- Charles Lim, PA-C
- Holly Holter, PA-C
- John Gerwig, PA-C
- Jyoti Bijpuria, PA-C
- Jessica Stehman, PA-C
- Chunhua Cao, PA-C
Mailing Address
Po Box 64264
Baltimore, MD 212644264