John Dean Baker, M.D.
Interventional Cardiology Physician · Santa Ana, CA
John Dean Baker, M.D. is an interventional cardiology physician with a practice address in Santa Ana, California, and NPI 1124022850, issued on Jun 10, 2005. Check the license (California G65259, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Dean Baker
- Credential
- M.D.
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- G65259 CA
Self-reported in NPPES; status is on the state search - Practice location
- 801 N Tustin Ave Ste 706, Santa Ana, CA 92705
- Phone
- (714) 568-6600
- Enumerated
- Jun 10, 2005
- Record last updated
- Feb 26, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 245-0260
- Medicaid ID
- GR0095890 CA
- Medicare enrollment
- Enrolled (PECOS I20080610000376); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 632 in California → Look up another NPI →
Also registered at 801 N Tustin Ave Ste 706
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sonia Arriaza Marroquin, PA-CPhysician Assistant1578340774
- Lauren GomezMedical Physician Assistant1588471510
- Maleah Grover, M.D.Cardiovascular Disease Physician1265472849
- Johnny Nguyen, MSN, FNPNurse Practitioner1881480788
- Annahita Sarcon, MDClinical Cardiac Electrophysiology Physician1265745848
Verify John Dean Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G65259Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average interventional cardiology physician in 2024
1,703 Medicare Part D claims for 300 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Eliquis163 claims
- Metoprolol Succinate142 claims
- Amlodipine Besylate129 claims
- Entresto107 claims
- Labetalol Hcl107 claims
- Losartan Potassium94 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: $464.69
6 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 6,394 providers of this specialty with any payment received $7,062.29 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.
Bills Medicare through one group practice
- Harinder S. Gogia, M.D., Inc.Santa Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Dean Baker among 632 interventional cardiology physician records in California
John Dean Baker, M.D. is one of 632 interventional cardiology physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1987 · median 2001 among the 526 with a school on file
- 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 207RI0011X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in California
There are 632 interventional cardiology physician records in California.
All 632 in California → Every provider in Santa Ana → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Harinder Gogia, M.D.Santa Ana, CA 927051114924727
- Mohammad Hajjar, M.DSanta Ana, CA 927051235350893
- Sean Hirota, M.D.Santa Ana, CA 927051942452271
- Ravi Masson, MDSanta Ana, CA 927051114423001
- Avinash Sharma, MDSanta Ana, CA 927051396107520
- Nicholas Doan Van, MD, F.A.C.C. INC.Fountain Valley, CA 927081801922521
- Tuan Nguyen, M.D.Fountain Valley, CA 927081669644951
- Hoang Nguyen, M.D.Fountain Valley, CA 927081811164528
Common questions
What is John Dean Baker, M.D.'s NPI number?
John Dean Baker, M.D.'s National Provider Identifier (NPI) is 1124022850, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Dean Baker, M.D. located?
The NPPES record lists a practice address at 801 N Tustin Ave Ste 706, Santa Ana, CA, 92705. Phone: (714) 568-6600. Providers update this record themselves, so call before visiting.
How can I verify John Dean Baker, M.D.'s license?
NPPES lists California license number G65259, 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 John Dean Baker, M.D. prescribe under Medicare Part D?
In 2024, John Dean Baker, M.D. had 1,703 Medicare Part D claims for 300 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. 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.