NPPES file of Aug 9, 2026

Karl J. Siebert, M.D.

Glaucoma Specialist (Ophthalmology) Physician · Grand Rapids, MI

Karl J. Siebert, M.D. is a glaucoma specialist (ophthalmology) physician with a practice address in Grand Rapids, Michigan, and NPI 1205809159, issued on Feb 10, 2006. Check the license (Michigan 4301073621, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1205809159
Name
Karl J. Siebert
Credential
M.D.
Primary taxonomy
Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
License number
4301073621 MI
Self-reported in NPPES; status is on the state search
Practice location
1000 E Paris Ave SE, Grand Rapids, MI 49546
Phone
(616) 949-2001
Enumerated
Feb 10, 2006
Record last updated
Apr 12, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(616) 949-8620
Medicaid ID
104094391 MI
Medicare enrollment
Enrolled (PECOS I20040408000476); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 1994
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1000 E Paris Ave SE

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eiyass Albeiruti, M.D.Ophthalmology Physician1952503864
  2. Christina AllenBehavior Technician1366256109
  3. Amber AndersonBehavior Technician1295420768
  4. Thomas Balaskas, M.D.Specialist1477548840
  5. Kadin Beck-Kusnier, BEHAVIORAL TECHBehavior Technician1114721826
  6. Esther BelliBehavior Technician1154106102

Verify Karl J. Siebert in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301073621
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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70% more Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024

5,214 Medicare Part D claims for 1,312 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.

  1. Karl Siebert5,214
  2. Specialty average3,060

Most prescribed

  1. Latanoprost1,276 claims
  2. Timolol Maleate893 claims
  3. Dorzolamide-Timolol724 claims
  4. Prednisolone Acetate517 claims
  5. Lumigan261 claims
  6. Brimonidine Tartrate240 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): 88.6 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.

  1. Qualityout of 100 · 30% of the final score94.7
  2. Costout of 100 · 30%69.2
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $194.90

11 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 391 providers of this specialty with any payment received $5,284.60 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karl Siebert$194.90
  2. Specialty average$5,284.60

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

  1. Verdier Eye Center PLCGrand Rapids, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Glaucoma Specialist (Ophthalmology) Physician providers in Michigan

There are 9 glaucoma specialist (ophthalmology) physician records in Michigan.

The 8 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes

  1. Roman Krivochenitser, M.D.Grand Rapids, MI 495461336553874
  2. Michael Bueche, M.D.East Lansing, MI 488231154305563
  3. Scott Piette, DOEast Lansing, MI 488231861423899
  4. Xiaokui You, M.D.East Lansing, MI 488231679557250
  5. My Le Shaw, M.D.Fenton, MI 484301467690131
  6. Emily Schehlein, MDBrighton, MI 481141538692421
  7. Stephen Walters, M.D.Pleasant Ridge, MI 480691013356914
  8. Sonia Rana, M.D.Southfield, MI 480341609190131

Common questions

What is Karl J. Siebert, M.D.'s NPI number?

Karl J. Siebert, M.D.'s National Provider Identifier (NPI) is 1205809159, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karl J. Siebert, M.D. located?

The NPPES record lists a practice address at 1000 E Paris Ave SE, Grand Rapids, MI, 49546. Phone: (616) 949-2001. Providers update this record themselves, so call before visiting.

How can I verify Karl J. Siebert, M.D.'s license?

NPPES lists Michigan license number 4301073621, 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 Karl J. Siebert, M.D. prescribe under Medicare Part D?

In 2024, Karl J. Siebert, M.D. had 5,214 Medicare Part D claims for 1,312 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. Part D covers Medicare prescriptions only.

What is Karl J. Siebert, M.D.'s MIPS final score?

The 2023 MIPS final score is 88.6 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.