James L. Loker, MD
Pediatric Cardiology Physician · Kalamazoo, MI
James L. Loker, MD is a pediatric cardiology physician with a practice address in Kalamazoo, Michigan, and NPI 1255311692, issued on Jan 20, 2006. Check the license (Michigan 4301065897, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- James L. Loker
- Credential
- MD
- Primary taxonomy
- Pediatric Cardiology Physician 2080P0202X
- License number
- 4301065897 MI
Self-reported in NPPES; status is on the state search - Practice location
- 601 John St, Kalamazoo, MI 49007
- Phone
- (269) 341-8786
- Enumerated
- Jan 20, 2006
- Record last updated
- Feb 2, 2023
- Fax
- (269) 341-8984
- Medicaid ID
- 3183737 MI
- Medicare enrollment
- Enrolled (PECOS I20060228000405); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1986
- Entity
- Type 1 · individual
8 nearest pediatric cardiology physician records → All 155 in Michigan → Look up another NPI →
Also registered at 601 John St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Fadi Ajine, MDRheumatology Physician1275533986
- Hussein Akl, MDInternal Medicine Physician1699757849
- Kwsai Al-Rahhal, MDSleep Medicine (Internal Medicine) Physician1639159247
Verify James L. Loker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301065897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average pediatric cardiology physician in 2024
29 Medicare Part D claims, against an average of 74 among the 518 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium12 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): 86.4 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).
Industry payments in 2024: $143.38
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 1,156 providers of this specialty with any payment received $2,864.57 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
James L. Loker among 155 pediatric cardiology physician records in Michigan
James L. Loker, MD is one of 155 pediatric cardiology physician records with a practice address in Michigan. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 66% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1986 · median 2005 among the 84 with a school on file
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Cardiology Physician providers in Michigan
There are 155 pediatric cardiology physician records in Michigan.
All 155 in Michigan → Every provider in Kalamazoo → Pediatric Cardiology Physician nationwide →
The 8 pediatric cardiology physician records with the nearest ZIP codes
- Robin Murphy, MDKalamazoo, MI 490071215917869
- Scott Maurer, MDLansing, MI 489121760437891
- David Matisoff, MDLansing, MI 489111649263633
- John Dysart, MDLansing, MI 489101265425177
- Anas Taqatqa, M.D.Lansing, MI 489101538471230
- Sunil JohnNiles, MI 491201306953542
- Hani Zreik, M.D.Saginaw, MI 486021881709871
- Yasser Al Khatib, MDGrand Rapids, MI 495031053311779
Common questions
What is James L. Loker, MD's NPI number?
James L. Loker, MD's National Provider Identifier (NPI) is 1255311692, issued on Jan 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James L. Loker, MD located?
The NPPES record lists a practice address at 601 John St, Kalamazoo, MI, 49007. Phone: (269) 341-8786. Providers update this record themselves, so call before visiting.
How can I verify James L. Loker, MD's license?
NPPES lists Michigan license number 4301065897, 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.
How much does James L. Loker, MD prescribe under Medicare Part D?
In 2024, James L. Loker, MD had 29 Medicare Part D claims; the average among pediatric cardiology physician prescribers was 74. Part D covers Medicare prescriptions only.
What is James L. Loker, MD's MIPS final score?
The 2023 MIPS final score is 86.4 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.