Gregory P. Johnson, DDS, MS
Orthodontics and Dentofacial Orthopedics Dentistry · Irvine, CA
Gregory P. Johnson, DDS, MS is an orthodontics and dentofacial orthopedics dentistry with a practice address in Irvine, California, and NPI 1740306794, issued on Mar 21, 2007. Check the license (California D22813, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory P. Johnson
- Credential
- DDS, MS
- Primary taxonomy
- Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
- License number
- D22813 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5394 Walnut Ave, Irvine, CA 92604
- Phone
- (949) 552-5800
- Enumerated
- Mar 21, 2007
- Record last updated
- Dec 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (949) 552-8905
- Entity
- Type 1 · individual
8 nearest orthodontics and dentofacial orthopedics dentistry records → All 1,881 in California → Look up another NPI →
Also registered at 5394 Walnut Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roger Yang, DDSDentist1295026433
Verify Gregory P. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license D22813Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $20.41
1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 7,622 providers of this specialty with any payment received $1,641.73 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.
Gregory P. Johnson among 1,881 orthodontics and dentofacial orthopedics dentistry records in California
Gregory P. Johnson, DDS, MS is one of 1,881 orthodontics and dentofacial orthopedics dentistry records with a practice address in California. 56% 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 22% of them.
- NPI issued2007 · 22% of these records are older, 49% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2011 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223X0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthodontics and Dentofacial Orthopedics Dentistry providers in California
There are 1,881 orthodontics and dentofacial orthopedics dentistry records in California.
All 1,881 in California → Every provider in Irvine → Orthodontics and Dentofacial Orthopedics Dentistry nationwide →
The 8 orthodontics and dentofacial orthopedics dentistry records with the nearest ZIP codes
- Betty Chen, D.D.S., M.S.Irvine, CA 926041902173362
- Wanda Claro, DDS, MS, INCIrvine, CA 926041528069135
- Tri Do, DDS, MSIrvine, CA 926041891820445
- Bahar Ghafouri, D.D.S., M.S., A.P.C.Irvine, CA 926041912901893
- Gordon Kilmer, DDS, MSIrvine, CA 926041518055292
- Eugene Kim, DDSIrvine, CA 926041306361845
- John Moutsatson, DDSIrvine, CA 926041376755678
- James Passamano, D.D.S., M.S.D.Irvine, CA 926041639186000
Common questions
What is Gregory P. Johnson, DDS, MS's NPI number?
Gregory P. Johnson, DDS, MS's National Provider Identifier (NPI) is 1740306794, issued on Mar 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory P. Johnson, DDS, MS located?
The NPPES record lists a practice address at 5394 Walnut Ave, Irvine, CA, 92604. Phone: (949) 552-5800. Providers update this record themselves, so call before visiting.
How can I verify Gregory P. Johnson, DDS, MS's license?
NPPES lists California license number D22813, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.