Guy P. Randazzo, M.D.
Pulmonary Disease Physician · Tustin, CA
Guy P. Randazzo, M.D. is a pulmonary disease physician with a practice address in Tustin, California, and NPI 1881663979, issued on Mar 14, 2006. Check the license (California A22452, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Guy P. Randazzo
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A22452 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13522 Newport Ave Ste 102, Tustin, CA 92780
- Phone
- (714) 573-8200
- Enumerated
- Mar 14, 2006
- Record last updated
- Mar 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 573-9401
- Medicaid IDs
- CB292883 CA
1912919804 CA - Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 13522 Newport Ave Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Chyan, MDPhysical Medicine & Rehabilitation Physician1013406628
- Amirpasha Ehsan, MDPhysical Medicine & Rehabilitation Physician1790073385
- Pin-Hung Hsieh, M.D.Internal Medicine Physician1144323064
- Vijay Jain, DMDDentist1710218326
- Julie Lopes, RN, NPFamily Nurse Practitioner1821358979
- Kim Ngan PhamPhysician Assistant1265115406
Verify Guy P. Randazzo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A22452Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
57 Medicare Part D claims for 21 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
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.
Guy P. Randazzo among 1,443 pulmonary disease physician records in California
Guy P. Randazzo, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Tustin → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Chin-Wei Huang, MDTustin, CA 927801831193895
- Imran Sharief, MDTustin, CA 927801174694426
- Rakesh Bhola, MDAnaheim, CA 928011518937754
- Clyde Dos Santos, M.D.Anaheim, CA 928011528166774
- George Girgis, M.D.Anaheim, CA 928011568792422
- Harmohinder Gogia, M.D.Anaheim, CA 928011851499800
- Tammy Le, MDAnaheim, CA 928011417273830
- Hung-I Liao, M.D.Anaheim, CA 928011346623550
Common questions
What is Guy P. Randazzo, M.D.'s NPI number?
Guy P. Randazzo, M.D.'s National Provider Identifier (NPI) is 1881663979, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Guy P. Randazzo, M.D. located?
The NPPES record lists a practice address at 13522 Newport Ave Ste 102, Tustin, CA, 92780. Phone: (714) 573-8200. Providers update this record themselves, so call before visiting.
How can I verify Guy P. Randazzo, M.D.'s license?
NPPES lists California license number A22452, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Guy P. Randazzo, M.D. prescribe under Medicare Part D?
In 2024, Guy P. Randazzo, M.D. had 57 Medicare Part D claims for 21 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.