Gregory Thomas Josephsen, D.M.D
Dentist · Baltimore, MD
Gregory Thomas Josephsen, D.M.D is a dentist with a practice address in Baltimore, Maryland, and NPI 1780018317, issued on Aug 30, 2013. Check the license (Maryland J66973028310864, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Thomas Josephsen
- Credential
- D.M.D
- Primary taxonomy
- Dentist 122300000X
- License number
- J66973028310864 MD
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolfe St, Baltimore, MD 21287
- Phone
- (410) 955-6663
- Enumerated
- Aug 30, 2013
- Record last updated
- Aug 30, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (410) 614-9747
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,870 in Maryland → Look up another NPI →
Also registered at 600 N Wolfe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Thomas Josephsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license J66973028310864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average dentist in 2024
37 Medicare Part D claims for 32 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin17 claims
- Chlorhexidine Gluconate17 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.
Gregory Thomas Josephsen among 1,870 dentist records in Maryland
Gregory Thomas Josephsen, D.M.D is one of 1,870 dentist records with a practice address in Maryland. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 59% of them.
- NPI issued2013 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2013 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dentist providers in Maryland
There are 1,870 dentist records in Maryland.
All 1,870 in Maryland → Every provider in Baltimore → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Oluwatoyin Ajayi, DMDBaltimore, MD 212871487307831
- Lauren Bolding, DDSBaltimore, MD 212871255600839
- Marilyn Brodeur, DDSBaltimore, MD 212871487965836
- Matthew CarellaBaltimore, MD 212871225441728
- Jenay Davis, DMDBaltimore, MD 212871225529753
- Anthony Hamod, DDSBaltimore, MD 212871649591298
- Seokhwan Oh, DDSBaltimore, MD 212871932333143
- Cameron Onken, DMDBaltimore, MD 212871639932858
Common questions
What is Gregory Thomas Josephsen, D.M.D's NPI number?
Gregory Thomas Josephsen, D.M.D's National Provider Identifier (NPI) is 1780018317, issued on Aug 30, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Thomas Josephsen, D.M.D located?
The NPPES record lists a practice address at 600 N Wolfe St, Baltimore, MD, 21287. Phone: (410) 955-6663. Providers update this record themselves, so call before visiting.
How can I verify Gregory Thomas Josephsen, D.M.D's license?
NPPES lists Maryland license number J66973028310864, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Thomas Josephsen, D.M.D prescribe under Medicare Part D?
In 2024, Gregory Thomas Josephsen, D.M.D had 37 Medicare Part D claims for 32 beneficiaries; the average among dentist prescribers was 86. 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.