Joanne Duffy, PH.D
Psychologist · Baltimore, MD
Joanne Duffy, PH.D is a psychologist with a practice address in Baltimore, Maryland, and NPI 1124172226, issued on Jan 23, 2007. Check the license (Maryland 2700, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Joanne Duffy
- Credential
- PH.D
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 2700 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2411 W Belvedere Ave Ste 504, Baltimore, MD 21215
- Phone
- (410) 601-0070
- Enumerated
- Jan 23, 2007
- Record last updated
- Jun 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (410) 601-0290
- Medicare enrollment
- Enrolled (PECOS I20050216000921); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 1,183 in Maryland → Look up another NPI →
Also registered at 2411 W Belvedere Ave Ste 504
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Corey Martin, M.D.Pediatric Pulmonology Physician1821408568
Verify Joanne Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 2700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Joanne Duffy among 1,183 psychologist records in Maryland
Joanne Duffy, PH.D is one of 1,183 psychologist records with a practice address in Maryland. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 62% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated1989 · median 1999 among the 167 with a school on file
- Record last updated2013 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in Maryland
There are 1,183 psychologist records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,183 in Maryland → Every provider in Baltimore → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Noelita Bowman, NCSP, PSYCHOLOGISTBaltimore, MD 212151619573805
- William Geiger, PHDBaltimore, MD 212141750316840
- James Meredith, PHDBaltimore, MD 212141093738262
- David Michelson, PSYDBaltimore, MD 212141487689576
- Alega PennBaltimore, MD 212161174339998
- Elaine Yamada, PH.D.Baltimore, MD 212161720137847
- Jessica Dunn, PHDBaltimore, MD 212171013570134
- Genevieve Gaisie, PHDBaltimore, MD 212131982671509
Common questions
What is Joanne Duffy, PH.D's NPI number?
Joanne Duffy, PH.D's National Provider Identifier (NPI) is 1124172226, issued on Jan 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joanne Duffy, PH.D located?
The NPPES record lists a practice address at 2411 W Belvedere Ave Ste 504, Baltimore, MD, 21215. Phone: (410) 601-0070. Providers update this record themselves, so call before visiting.
How can I verify Joanne Duffy, PH.D's license?
NPPES lists Maryland license number 2700, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity 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. 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.