Gregory J. Porter, M.D.
Anesthesiology Physician · Grass Valley, CA
Gregory J. Porter, M.D. is an anesthesiology physician with a practice address in Grass Valley, California, and NPI 1790741262, issued on Apr 25, 2006. Check the license (California G72310, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory J. Porter
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- G72310 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Sierra College Dr Ste B, Grass Valley, CA 95945
- Phone
- (530) 272-3428
- Enumerated
- Apr 25, 2006
- Record last updated
- Jun 18, 2024
- Fax
- (530) 272-3429
- Medicaid ID
- 00G723100 CA
- Medicare enrollment
- Enrolled (PECOS I20040402001156); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 400 Sierra College Dr Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Magan, CRNACertified Registered Nurse Anesthetist1780734004
Verify Gregory J. Porter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G72310Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average anesthesiology physician in 2024
618 Medicare Part D claims for 130 beneficiaries, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 389 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen204 claims
- Oxycodone-Acetaminophen57 claims
- Gabapentin51 claims
- Tramadol Hcl36 claims
- Buprenorphine Hcl24 claims
- Buprenorphine23 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $854.33
37 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 17,774 providers of this specialty with any payment received $669.59 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
- Interventional Pain Solutions PCChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory J. Porter among 7,571 anesthesiology physician records in California
Gregory J. Porter, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1990 · median 2006 among the 4,868 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Grass Valley → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Alan Cary, M.D.Grass Valley, CA 959451063494888
- Samuel Chan, M.D.Grass Valley, CA 959451043286974
- Ann Engel, M.D.Grass Valley, CA 959451770550758
- David Lloyd, M.D.Grass Valley, CA 959451255394516
- Thomas Luisetti, MDGrass Valley, CA 959451841247178
- Paul Rabedeaux, M.D.Grass Valley, CA 959451255690129
- Cody Reeves, M.D.Grass Valley, CA 959451710943030
- William Rose, MDGrass Valley, CA 959451891741104
Common questions
What is Gregory J. Porter, M.D.'s NPI number?
Gregory J. Porter, M.D.'s National Provider Identifier (NPI) is 1790741262, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory J. Porter, M.D. located?
The NPPES record lists a practice address at 400 Sierra College Dr Ste B, Grass Valley, CA, 95945. Phone: (530) 272-3428. Providers update this record themselves, so call before visiting.
How can I verify Gregory J. Porter, M.D.'s license?
NPPES lists California license number G72310, 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 Gregory J. Porter, M.D. prescribe under Medicare Part D?
In 2024, Gregory J. Porter, M.D. had 618 Medicare Part D claims for 130 beneficiaries; the average among anesthesiology physician prescribers was 402. Part D covers Medicare prescriptions only.
What is Gregory J. Porter, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.