NPPES file of Aug 9, 2026

Gregory A. Lehman, DDS

Oral and Maxillofacial Surgery (Dentist) · Crystal Lake, IL

Gregory A. Lehman, DDS is an oral and maxillofacial surgery (dentist) with a practice address in Crystal Lake, Illinois, and NPI 1477592061, issued on Jun 6, 2006. Check the license with the Illinois 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
1477592061
Name
Gregory A. Lehman
Credential
DDS
Primary taxonomy
Oral and Maxillofacial Surgery (Dentist) 1223S0112X
Practice location
850 Munshaw Lane, Crystal Lake, IL 60014
Phone
(815) 459-7400
Enumerated
Jun 6, 2006
Record last updated
Jul 13, 2026
Fax
(847) 658-9320
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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Also registered at 850 Munshaw Lane

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

  1. Michael Menis, DDSOral and Maxillofacial Surgery (Dentist)1336185305

Verify Gregory A. Lehman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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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17% fewer Medicare Part D claims than the average oral and maxillofacial surgery (dentist) in 2024

337 Medicare Part D claims for 177 beneficiaries, against an average of 406 among the 5,870 providers of this specialty who prescribed in Part D. 61 claims were for opioids.

  1. Gregory Lehman337
  2. Specialty average406

Most prescribed

  1. Amoxicillin-Clavulanate Potass162 claims
  2. Amoxicillin48 claims
  3. Hydrocodone-Acetaminophen42 claims
  4. Clarithromycin27 claims
  5. Chlorhexidine Gluconate20 claims
  6. Acetaminophen-Codeine17 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: $206.02

7 payments; by number, the most common kind was food and beverage; the largest payer was Zimvie Inc. The 4,075 providers of this specialty with any payment received $1,077.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Lehman$206.02
  2. Specialty average$1,077.58

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

Gregory A. Lehman among 322 oral and maxillofacial surgery (dentist) records in Illinois

Gregory A. Lehman, DDS is one of 322 oral and maxillofacial surgery (dentist) records with a practice address in Illinois. 70% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 56% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileNo · 10% of these records are
  • Record last updated2026 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Oral and Maxillofacial Surgery (Dentist) providers in Illinois

There are 322 oral and maxillofacial surgery (dentist) records in Illinois.

The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes

  1. Michael Jones, DDSCrystal Lake, IL 600141215955745
  2. Michael Menis, DDSCrystal Lake, IL 600141336185305
  3. Benjamin Logiudice, D.D.S.Deerfield, IL 600151255341178
  4. Kurt Bruksch, D.D.S.Crystal Lake, IL 600121154339448
  5. Jeffrey Halpern, D.D.S.Des Plaines, IL 600161740284363
  6. Jack Harris, DMDCrystal Lake, IL 600121427706035
  7. Adam Ozment, D.D.S.Crystal Lake, IL 600121033127238
  8. John Richard, DDSCrystal Lake, IL 600121700865441

Common questions

What is Gregory A. Lehman, DDS's NPI number?

Gregory A. Lehman, DDS's National Provider Identifier (NPI) is 1477592061, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory A. Lehman, DDS located?

The NPPES record lists a practice address at 850 Munshaw Lane, Crystal Lake, IL, 60014. Phone: (815) 459-7400. Providers update this record themselves, so call before visiting.

How can I verify Gregory A. Lehman, DDS's license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Gregory A. Lehman, DDS prescribe under Medicare Part D?

In 2024, Gregory A. Lehman, DDS had 337 Medicare Part D claims for 177 beneficiaries; the average among oral and maxillofacial surgery (dentist) prescribers was 406. 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.