Joseph Michael Porciuncula Jacob, MD
Internal Medicine Physician · Grand Rapids, MI
Joseph Michael Porciuncula Jacob, MD is an internal medicine physician with a practice address in Grand Rapids, Michigan, and NPI 1184911034, issued on Jun 29, 2011. Check the license (Michigan 4301098513, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Joseph Michael Porciuncula Jacob
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301098513 MI
Self-reported in NPPES; status is on the state search - Practice location
- 100 Michigan St NE, Grand Rapids, MI 49503
- Phone
- (616) 391-3139
- Enumerated
- Jun 29, 2011
- Record last updated
- Feb 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (616) 391-3044
- Medicare enrollment
- Enrolled (PECOS I20140711001622); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 100 Michigan St NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph Michael Porciuncula Jacob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301098513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Spectrum Health Primary Care PartnersGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Michael Porciuncula Jacob among 5,735 internal medicine physician records in Michigan
Joseph Michael Porciuncula Jacob, MD is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 57% of them.
- NPI issued2011 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2007 · median 2006 among the 3,564 with a school on file
- Record last updated2021 · 54% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
451 internal medicine physician records list a practice address in Grand Rapids
They are 451 of the 18,005 NPPES records with a practice address in Grand Rapids, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Grand Rapids → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Mark Evenhouse, M.D.Grand Rapids, MI 495031053386367
- Robert Jarve, MDGrand Rapids, MI 495031285639161
- Rajendra Katragadda, MDGrand Rapids, MI 495031811974017
- Patricia Lagrand, MDGrand Rapids, MI 495031215931258
- Gerald Lee, MDGrand Rapids, MI 495031265437420
Common questions
What is Joseph Michael Porciuncula Jacob, MD's NPI number?
Joseph Michael Porciuncula Jacob, MD's National Provider Identifier (NPI) is 1184911034, issued on Jun 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Michael Porciuncula Jacob, MD located?
The NPPES record lists a practice address at 100 Michigan St NE, Grand Rapids, MI, 49503. Phone: (616) 391-3139. Providers update this record themselves, so call before visiting.
How can I verify Joseph Michael Porciuncula Jacob, MD's license?
NPPES lists Michigan license number 4301098513, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Joseph Michael Porciuncula Jacob, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.