NPPES file of Aug 9, 2026

Bartholomew Greer Kreiner

General Practice Dentistry · Bel Air, MD

Bartholomew Greer Kreiner is a general practice dentistry with a practice address in Bel Air, Maryland, and NPI 1134333909, issued on May 10, 2007. Check the license (Maryland 10595, as entered in NPPES) with the Maryland 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
1134333909
Name
Bartholomew Greer Kreiner
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
10595 MD
Self-reported in NPPES; status is on the state search
Practice location
511 S Fountain Green RD, Bel Air, MD 21015
Phone
(410) 879-1730
Enumerated
May 10, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
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 Bartholomew Greer Kreiner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license 10595
    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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84% fewer Medicare Part D claims than the average general practice dentistry in 2024

13 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Bartholomew Kreiner13
  2. Specialty average83

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.

Bartholomew Greer Kreiner among 2,408 general practice dentistry records in Maryland

Bartholomew Greer Kreiner is one of 2,408 general practice dentistry records with a practice address in Maryland. 62% 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 28% of them.

  • NPI issued2007 · 28% of these records are older, 45% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 72% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

27 general practice dentistry records list a practice address in Bel Air

They are 27 of the 1,945 NPPES records with a practice address in Bel Air, and 2,408 general practice dentistry records in Maryland.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Blake AschenbachBel Air, MD 210151356291827
  2. Leo HanderhanBel Air, MD 210151801968078
  3. Iwona Kubiczek, DDSBel Air, MD 210151881752806
  4. George Popowych, D.D.S.Bel Air, MD 210151376872747
  5. Gary Reznik, D.D.S.Bel Air, MD 210151861513335
  6. Siavash Sadeghi Sedigh, DDSBel Air, MD 210151780299966
  7. Kaynaat Singh, DDSBel Air, MD 210151194210344
  8. Stephanie Spitznagel, DDSBel Air, MD 210151235796491

Common questions

What is Bartholomew Greer Kreiner's NPI number?

Bartholomew Greer Kreiner's National Provider Identifier (NPI) is 1134333909, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Bartholomew Greer Kreiner located?

The NPPES record lists a practice address at 511 S Fountain Green RD, Bel Air, MD, 21015. Phone: (410) 879-1730. Providers update this record themselves, so call before visiting.

How can I verify Bartholomew Greer Kreiner's license?

NPPES lists Maryland license number 10595, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Bartholomew Greer Kreiner prescribe under Medicare Part D?

In 2024, Bartholomew Greer Kreiner had 13 Medicare Part D claims; 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.