Donald F. Slack, M.D.
Pulmonary Disease Physician · Towson, MD
Donald F. Slack, M.D. is a pulmonary disease physician with a practice address in Towson, Maryland, and NPI 1790005981, issued on Jun 10, 2010. Check the license (Maryland D0080447, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Donald F. Slack
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- D0080447 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6565 North Charles St., Towson, MD 21204
- Phone
- (443) 849-3901
- Enumerated
- Jun 10, 2010
- Record last updated
- Jun 20, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (443) 849-3902
- Medicare enrollment
- Enrolled (PECOS I20161018001317); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 342 in Maryland → Look up another NPI →
Verify Donald F. Slack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0080447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
99 Medicare Part D claims for 31 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of claims.
Most prescribed
- Trelegy Ellipta25 claims
- Nucala12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Greater Baltimore Medical Center IncBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald F. Slack among 342 pulmonary disease physician records in Maryland
Donald F. Slack, M.D. is one of 342 pulmonary disease physician records with a practice address in Maryland. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 78% of them.
- NPI issued2010 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2000 among the 225 with a school on file
- Record last updated2018 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Maryland
There are 342 pulmonary disease physician records in Maryland.
All 342 in Maryland → Every provider in Towson → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Gregory Bassmann, MDBaltimore, MD 212041174781611
- Elisabeth Carr, M.D.Towson, MD 212041184777104
- Marie Chatham, M.D.Towson, MD 212041104916691
- Jennifer Chiurco, MDTowson, MD 212041184129280
- Chelsi Green, MDBaltimore, MD 212041871082099
- Hassan MakhzoumiTowson, MD 212041912993031
- Jack Nissim, M./D.Towson, MD 212041316029291
- Chahat Puri, M.D.Towson, MD 212041235798141
Common questions
What is Donald F. Slack, M.D.'s NPI number?
Donald F. Slack, M.D.'s National Provider Identifier (NPI) is 1790005981, issued on Jun 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Donald F. Slack, M.D. located?
The NPPES record lists a practice address at 6565 North Charles St., Towson, MD, 21204. Phone: (443) 849-3901. Providers update this record themselves, so call before visiting.
How can I verify Donald F. Slack, M.D.'s license?
NPPES lists Maryland license number D0080447, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donald F. Slack, M.D. prescribe under Medicare Part D?
In 2024, Donald F. Slack, M.D. had 99 Medicare Part D claims for 31 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.