Joseph John Barth, MD
Internal Medicine Physician · Prince Frederick, MD
Joseph John Barth, MD is an internal medicine physician with a practice address in Prince Frederick, Maryland, and NPI 1164571741, issued on Jan 10, 2007. Check the license (Maryland D52242, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Joseph John Barth
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D52242 MD
Self-reported in NPPES; status is on the state search - Practice location
- 110 Hospital RD Ste 310, Prince Frederick, MD 20678
- Phone
- (410) 535-2005
- Enumerated
- Jan 10, 2007
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (410) 535-4850
- Medicaid ID
- 678540900 MD
- Medicare enrollment
- Enrolled (PECOS I20100603000293); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 110 Hospital RD Ste 310
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elaine Cira, CRNP-FFamily Nurse Practitioner1366597734
- Waseema Dalvi, MDHospitalist Physician1427117555
- Deborah Davis, CRNPWomen's Health Nurse Practitioner1487649232
- Barbara Estes, M.D.Obstetrics & Gynecology Physician1508998816
- Hilary Ginter, MDObstetrics & Gynecology Physician1144221227
- Ashly Gray, CRNPNurse Practitioner1497381586
Verify Joseph John Barth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D52242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,379 Medicare Part D claims for 538 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 179 claims were for opioids.
Most prescribed
- Atorvastatin Calcium618 claims
- Losartan Potassium439 claims
- Tamsulosin Hcl251 claims
- Gabapentin250 claims
- Hydrochlorothiazide250 claims
- Lisinopril245 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Calvert Internal Medicine Group, PADunkirk, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph John Barth among 3,904 internal medicine physician records in Maryland
Joseph John Barth, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1986 · median 2003 among the 2,445 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Prince Frederick
They are 15 of the 663 NPPES records with a practice address in Prince Frederick, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Prince Frederick → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Eric Berg, M.D.Prince Frederick, MD 206781346315157
- Stephanie Carpenter, MDPrince Frederick, MD 206781871754499
- Viplav DeogaonkarPrince Frederick, MD 206781609339050
- Ikenna Ihim, MDPrince Frederick, MD 206781679955066
- Parul Jani, M.D.Prince Frederick, MD 206781174527501
- Charles Judge, M.D.Prince Frederick, MD 206781821147489
- Jonathan Lowenthal, MDPrince Frederick, MD 206781861553711
- Nayantara Mendonca, MDPrince Frederick, MD 206781952453359
Common questions
What is Joseph John Barth, MD's NPI number?
Joseph John Barth, MD's National Provider Identifier (NPI) is 1164571741, issued on Jan 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph John Barth, MD located?
The NPPES record lists a practice address at 110 Hospital RD Ste 310, Prince Frederick, MD, 20678. Phone: (410) 535-2005. Providers update this record themselves, so call before visiting.
How can I verify Joseph John Barth, MD's license?
NPPES lists Maryland license number D52242, 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 Joseph John Barth, MD prescribe under Medicare Part D?
In 2024, Joseph John Barth, MD had 8,379 Medicare Part D claims for 538 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Joseph John Barth, MD's MIPS final score?
The 2023 MIPS final score is 88 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.