NPPES file of Aug 9, 2026

Grant Christopher Greif, DDS

General Practice Dentistry · Warsaw, IN

Grant Christopher Greif, DDS is a general practice dentistry with a practice address in Warsaw, Indiana, and NPI 1790385508, issued on Oct 30, 2020. Check the license (Indiana 12013486A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1790385508
Name
Grant Christopher Greif
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
12013486A IN
Self-reported in NPPES; status is on the state search
Practice location
935 N Detroit St, Warsaw, IN 46580
Phone
(574) 267-3359
Enumerated
Oct 30, 2020
Record last updated
Nov 15, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Grant Christopher Greif in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana board licenses this profession
    Search for license 12013486A
    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
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36% more Medicare Part D claims than the average general practice dentistry in 2024

113 Medicare Part D claims for 68 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Grant Greif113
  2. Specialty average83

Most prescribed

  1. Amoxicillin75 claims
  2. Chlorhexidine Gluconate22 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.

Industry payments in 2024: $41.92

3 payments; by number, the most common kind was food and beverage; the largest payer was Philips North America LLC. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Grant Greif$41.92
  2. Specialty average$597.01

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

13 general practice dentistry records list a practice address in Warsaw

They are 13 of the 607 NPPES records with a practice address in Warsaw, and 2,066 general practice dentistry records in Indiana.

Other general practice dentistry records in Indiana

  1. Omar AasarFort Wayne, IN1699470385
  2. Layth Abbood, DDSFort Wayne, IN1912576075
  3. Grant Abernathey, D.D.S.Terre Haute, IN1750669388
  4. Joyce Ablog, D.D.S.Evansville, IN1336276187
  5. Thomas Abrell, D.D.S.Terre Haute, IN1356329346
  6. Simon Abu-Aita, DMDCrown Point, IN1891420410
  7. Denise Acosta, DMDFort Wayne, IN1548370018
  8. Kenneth Adams, D.D.S.Greenwood, IN1104246750
  9. Lawrence Adams, D.D.S.Hammond, IN1154454346
  10. Rachel Adams, DMDRensselaer, IN1538095260

Common questions

What is Grant Christopher Greif, DDS's NPI number?

Grant Christopher Greif, DDS's National Provider Identifier (NPI) is 1790385508, issued on Oct 30, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Grant Christopher Greif, DDS located?

The NPPES record lists a practice address at 935 N Detroit St, Warsaw, IN, 46580. Phone: (574) 267-3359. Providers update this record themselves, so call before visiting.

How can I verify Grant Christopher Greif, DDS's license?

NPPES lists Indiana license number 12013486A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.

How much does Grant Christopher Greif, DDS prescribe under Medicare Part D?

In 2024, Grant Christopher Greif, DDS had 113 Medicare Part D claims for 68 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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. 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.