Dr. Stephen John Witanowski, MD
- Medicare services, 2020
- 1,061
- Part D claims, 2024
- 29
- Industry payments
- $2,523
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 600 N Wolfe St, Baltimore, MD 21287
- Practice phone
- Call (855) 662-3017
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Johns Hopkins Hospital Nelson/Harvey Building
Baltimore, Maryland
Find Dr. Witanowski's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stephen John Witanowski is an internist in Baltimore, Maryland
Dr. Witanowski practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Dr. Witanowski's NPI, 1003040726, was assigned on May 9, 2009. Dr. Witanowski holds Maryland license D0080458.
- NPI
- 1003040726NPI Registry (opens in a new tab)
- NPI enumeration date
- May 9, 2009
- NPI status
- Active
- Practice phone
- (855) 662-3017
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Stephen John Witanowski practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland
Dr. Witanowski's primary practice is Johns Hopkins Hospital Nelson/Harvey Building, at 600 N Wolfe St, Baltimore, MD 21287 in Baltimore City. The practice phone is (855) 662-3017.
- Johns Hopkins Hospital Nelson/Harvey Building600 N Wolfe St, Baltimore, MD 21287 · Baltimore CityPhone(855) 662-3017
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen John Witanowski is affiliated with 2 sites of care and 1 medical group
Dr. Witanowski's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. The medical group on file is Lutherville Pediatrics. Dmand AI also links Dr. Witanowski to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stephen John Witanowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Witanowski practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Hospital Nelson/Harvey Building | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen John Witanowski is one of 3,320 internists in Maryland
Internal medicine is Dr. Witanowski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Witanowski is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Witanowski
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen John Witanowski billed Medicare for 1,061 services in 2020
CMS data shows 1,061 Medicare services from Dr. Witanowski across 9 procedure codes in 2020. Medicare paid $44,381 for them. Every service was in an office.
Dr. Witanowski's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1,2882020: 80038%
- Tests and treatments
- 2019: 2942020: 13953%
- Other services
- 2019: 1182020: 10412%
- Lab and pathology
- 2019: 1042020: 1883%
Dr. Witanowski compared with the Maryland median for internists, 2020
- Dr. Witanowski
- Maryland median
- Medicare services
- 1,061vs 65662% above
- Part D claims
- 342vs 30911% above
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Witanowski's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Witanowski and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen John Witanowski's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Witanowski's median patient age at 73, with 39% women.
Dr. Witanowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women39%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Stephen John Witanowski wrote 29 Medicare Part D claims in 2024
In 2024, Dr. Witanowski wrote 29 Medicare Part D claims. 83% of them were for generic drugs. They cover 15 drugs, with $93,708 in total drug cost. In 2020, CMS named 3,217 claims across 75 drugs.
Dr. Witanowski's Part D claims by kind of drug, 2024
- Generic24 claims83%
- Brand-name and other5 claims17%
Dr. Witanowski's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 3,2172021: 34289%
Drugs named by CMS: 15 in 2021, 75 in 2020.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Stephen John Witanowski received $2,523 in industry payments from 2016 to 2021
CMS Open Payments shows 168 general payments to Dr. Witanowski from 27 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $405.
General payments to Dr. Witanowski by program year, 2016 to 2021
Companies that paid Dr. Witanowski the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Stephen John Witanowski's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stephen John Witanowski
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stephen John Witanowski's NPI number?
Dr. Stephen John Witanowski's NPI number is 1003040726. It was assigned on May 9, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen John Witanowski?
Dr. Stephen John Witanowski is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephen John Witanowski practice?
Dr. Witanowski practices at 600 N Wolfe St, Baltimore, MD 21287. Dr. Witanowski's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dmand AI also links Dr. Witanowski to 1 group practice or clinic.
What is Dr. Stephen John Witanowski's office phone number?
The practice phone on file for Dr. Witanowski is (855) 662-3017.
What is Dr. Stephen John Witanowski's medical license number?
Dr. Witanowski holds Maryland license D0080458.
What medical group is Dr. Stephen John Witanowski part of?
Dr. Witanowski is linked to Lutherville Pediatrics.
Does Dr. Stephen John Witanowski accept Medicare?
Yes. CMS data shows Dr. Witanowski billed Medicare for 1,061 services in 2020.
What services does Dr. Stephen John Witanowski bill to Medicare?
In 2020, Dr. Witanowski's most billed Medicare services were office visit, established patient (99213), care management and other visits (99441) and office visit, established patient (99214).
What drugs does Dr. Stephen John Witanowski prescribe most?
In 2021 Medicare Part D data, Dr. Witanowski's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Metformin HCl.
Has Dr. Stephen John Witanowski received payments from drug or device companies?
CMS Open Payments shows $2,523 in general payments to Dr. Witanowski from 27 companies from 2016 to 2021. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Stephen John Witanowski been practicing?
Dr. Witanowski's NPI was assigned in 2009.
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