Kenneth R. Grabow, MD
Pain Medicine (Anesthesiology) Physician · Santa Ana, CA
Kenneth R. Grabow, MD is a pain medicine (anesthesiology) physician with a practice address in Santa Ana, California, and NPI 1629089529, issued on Aug 10, 2006. Check the license (California G66481, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth R. Grabow
- Credential
- MD
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- G66481 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 542-5999
- Enumerated
- Aug 10, 2006
- Record last updated
- Oct 13, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- G66481 CA
- Medicare enrollment
- Enrolled (PECOS I20130429000700); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 536 in California → Look up another NPI →
Also registered at 1200 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kenneth R. Grabow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66481Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
2,238 Medicare Part D claims for 165 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 1,071 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen555 claims
- Gabapentin275 claims
- Tizanidine Hcl204 claims
- Oxycodone Hcl100 claims
- Oxycodone-Acetaminophen98 claims
- Omeprazole84 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.
Kenneth R. Grabow among 536 pain medicine (anesthesiology) physician records in California
Kenneth R. Grabow, MD is one of 536 pain medicine (anesthesiology) physician records with a practice address in California. 83% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 57% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1988 · median 2004 among the 367 with a school on file
- Record last updated2010 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in California
There are 536 pain medicine (anesthesiology) physician records in California.
All 536 in California → Every provider in Santa Ana → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- James Kim, M.D.Santa Ana, CA 927051720249691
- Michael Lowenstein, MDSanta Ana, CA 927051174630453
- Hooman Rastegar, MDSanta Ana, CA 927051710149711
- Alan Ho, M.D.Fountain Valley, CA 927081154565612
- Afzaal IqbalFountain Valley, CA 927081861782674
- Elizabeth WatsonFountain Valley, CA 927081457858227
- Patrick Ahern, MDIrvine, CA 926971154883072
- Cecil Desilva, M.D.Irvine, CA 926971649426248
Common questions
What is Kenneth R. Grabow, MD's NPI number?
Kenneth R. Grabow, MD's National Provider Identifier (NPI) is 1629089529, issued on Aug 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth R. Grabow, MD located?
The NPPES record lists a practice address at 1200 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 542-5999. Providers update this record themselves, so call before visiting.
How can I verify Kenneth R. Grabow, MD's license?
NPPES lists California license number G66481, 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 Kenneth R. Grabow, MD prescribe under Medicare Part D?
In 2024, Kenneth R. Grabow, MD had 2,238 Medicare Part D claims for 165 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. 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.