RetinaRetinal PerforationsTomography, Optical Coherence
Dr. Michael Forrest Clamp, MD
NPI1952621211PAC ID0941516843
- Medicare services, 2016
- 127
- Part D claims, 2024
- 2,252
- Publications
- 4
- Hospital affiliations
- 1
- Industry payments
- $1,778
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Clamp's professional email, personal email and mobile number
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Dr. Michael Forrest Clamp is an ophthalmologist in Stockton, California
Dr. Clamp practices at Permanente Medical Group Inc in Stockton, California.
Dr. Clamp's NPI, 1952621211, was assigned on June 9, 2010. Dr. Clamp graduated from University Of Florida College Of Medicine in 2010. Dr. Clamp's North Carolina license number on file is 2015-01366.
NPI and contact details
- NPI
- 1952621211NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941516843
- NPI enumeration date
- June 9, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Forrest Clamp practices at Permanente Medical Group Inc in Stockton, California
Dr. Clamp's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Forrest Clamp is affiliated with 3 sites of care and 1 medical group
Dr. Clamp's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Clamp is also affiliated with Santa Rosa Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Clamp to 1 more group practice or clinic, named with a free account.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Forrest Clamp's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clamp practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Forrest Clamp is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Clamp's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Clamp is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Clamp's licenses on file in 3 states: North Carolina, Florida and California.
Specialties and state licenses
- Ophthalmology, North CarolinaPrimary
- Internal medicine, Florida
- California license
Ophthalmologists near Dr. Clamp
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael Forrest Clamp billed Medicare for 127 services in 2016
CMS data shows 127 Medicare services from Dr. Clamp across 3 procedure codes in 2016. Medicare paid $4,858 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2016127
Paid by Medicare$4,858
Procedure codes3
Dr. Clamp's Medicare services by type, 2016
- Office and hospital visits115
- Tests and treatments12
Dr. Clamp compared with the California median for ophthalmologists, 2016
- Dr. Clamp
- California median
- Medicare services
- 127vs 1,07988% below
- Part D claims
- 2,175vs 6183.5 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Clamp's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Clamp?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Clamp and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Forrest Clamp's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Clamp's median patient age at 63, with 55% women.
Dr. Clamp's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women55%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Michael Forrest Clamp wrote 2,252 Medicare Part D claims in 2024
In 2024, Dr. Clamp wrote 2,252 Medicare Part D claims for 537 patients. 74% of them were for generic drugs. CMS names the drug for 2,175 of them, across 22 drugs with 11 or more claims each, at $108,264 in total drug cost. In 2023, CMS named 1,935 claims across 21 drugs.
Part D claims, 20242,252
Drugs named by CMS22
Total drug cost$108,264
Part D patients537
Dr. Clamp's Part D claims by kind of drug, 2024
- Generic1,673 claims74%
- Brand-name579 claims26%
Dr. Clamp's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,9352024: 2,17512%
Drugs named by CMS: 22 in 2024, 21 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Michael Forrest Clamp takes part in Medicare
Dr. Clamp accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael Forrest Clamp has 4 publications on record
Dmand AI links 4 papers to Dr. Clamp. The most frequent topics are Retinal Perforations and Tomography, Optical Coherence. Dr. Clamp's most frequent co-authors are J Michael Jumper, MD, Brandon Lujan, MD and Emmett T. Cunningham, MD, MPH, PhD.
Papers4
Topics Dr. Clamp writes about most
- Retinal Perforations
- Tomography, Optical Coherence
Dr. Clamp's most frequent co-authors
- J Michael Jumper, MD3 shared papers
- Brandon Lujan, MD3 shared papers
- Emmett T. Cunningham, MD, MPH, PhD2 shared papers
Recent publications by Dr. Clamp
Retin Cases Brief Rep
EndophthalmitisEye Infections, FungalKeratitis
JAMA Ophthalmol
Retinal DrusenRetinal PerforationsTomography, Optical Coherence
See who Dr. Clamp researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Clamp works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael Forrest Clamp received $1,778 in industry payments from 2016 to 2025
CMS Open Payments shows 8 general payments to Dr. Clamp from 6 drug and device companies from 2016 to 2025. Education make up the largest share, 70% of the total. Carl Zeiss Meditec, Inc. paid the most, $1,250.
General payments to Dr. Clamp by program year, 2016 to 2025
General payments to Dr. Clamp by kind, 2016 to 2025
$1.8Kin total
- Education$1,25070%
- Food and beverage$47727%
- Honoraria$392%
- Travel and lodging$121%
Companies that paid Dr. Clamp the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Forrest Clamp graduated from University Of Florida College Of Medicine
Dr. Clamp graduated from University Of Florida College Of Medicine in 2010. Dr. Clamp is a member of AAO and ASCRS.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Michael Forrest Clamp accepts plans from 2 insurance carriers
Dr. Clamp is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Clamp accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael Forrest Clamp's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael Forrest Clamp
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael Forrest Clamp's NPI number?
Dr. Michael Forrest Clamp's NPI number is 1952621211. It was assigned on June 9, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Forrest Clamp?
Dr. Michael Forrest Clamp is an ophthalmologist in Stockton, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Michael Forrest Clamp practice?
Dr. Clamp practices at 7373 West Ln, Stockton, CA 95210. Dr. Clamp's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Clamp to 1 group practice or clinic.
What is Dr. Michael Forrest Clamp's office phone number?
The practice phone on file for Dr. Clamp is (209) 476-2000.
What is Dr. Michael Forrest Clamp's medical license number?
Dr. Clamp's North Carolina license number on file is 2015-01366, one of the licenses on file in 3 states.
Which states has Dr. Michael Forrest Clamp been licensed in?
Dmand AI has state licenses on file for Dr. Clamp in North Carolina (2015 to 2017), Florida and California (2012 to 2026).
Which hospitals is Dr. Michael Forrest Clamp affiliated with?
Dr. Clamp is affiliated with Santa Rosa Medical Center.
What medical group is Dr. Michael Forrest Clamp part of?
Dr. Clamp is linked to The Permanente Medical Group, Inc.
Does Dr. Michael Forrest Clamp accept Medicare?
Yes. CMS data shows Dr. Clamp billed Medicare for 127 services in 2016, and Dr. Clamp accepts Medicare assignment.
Is Dr. Michael Forrest Clamp board certified?
Yes. Dr. Clamp is board certified in ophthalmology by the American Board of Ophthalmology.
Show 8 more questionsShow fewer questions
What services does Dr. Michael Forrest Clamp bill to Medicare?
In 2016, Dr. Clamp's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and eye exam or test (92134).
Where did Dr. Michael Forrest Clamp go to medical school?
Dr. Clamp graduated from University Of Florida College Of Medicine in 2010.
What drugs does Dr. Michael Forrest Clamp prescribe most?
In 2024 Medicare Part D data, Dr. Clamp's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Dorzolamide-Timolol.
Has Dr. Michael Forrest Clamp received payments from drug or device companies?
CMS Open Payments shows $1,778 in general payments to Dr. Clamp from 6 companies from 2016 to 2025. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Michael Forrest Clamp been practicing?
Dr. Clamp graduated from medical school in 2010, 16 years ago.
Does Dr. Michael Forrest Clamp do research?
Dmand AI links 4 publications to Dr. Clamp.
Who does Dr. Michael Forrest Clamp publish with?
Dr. Clamp's most frequent co-authors are J Michael Jumper, MD (3 shared papers), Brandon Lujan, MD (3 shared papers) and Emmett T. Cunningham, MD, MPH, PhD (2 shared papers).
What insurance does Dr. Michael Forrest Clamp accept?
Dr. Clamp is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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