Spencer Chapman Knox, M.D.
Gastroenterology Physician · Fleming Island, FL
Spencer Chapman Knox, M.D. is a gastroenterology physician with a practice address in Fleming Island, Florida, and NPI 1205220688, issued on Mar 24, 2015. Check the license (Florida ME148899, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Spencer Chapman Knox
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- ME148899 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1747 Baptist Clay Dr Ste 300, Fleming Island, FL 32003
- Phone
- (904) 214-8080
- Enumerated
- Mar 24, 2015
- Record last updated
- Jun 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (904) 214-8081
- Medicaid ID
- 110557300 FL
- Medicare enrollment
- Enrolled (PECOS I20210511002846); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,513 in Florida → Look up another NPI →
Also registered at 1747 Baptist Clay Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Herman, DOGastroenterology Physician1831179290
- Tarun Rai, M.D.Gastroenterology Physician1821304353
- Raychel RaymerMedical Physician Assistant1376945188
Verify Spencer Chapman Knox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME148899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average gastroenterology physician in 2024
476 Medicare Part D claims for 212 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Pantoprazole Sodium136 claims
- Gavilyte-G93 claims
- Omeprazole50 claims
- Peg-3350 And Electrolytes25 claims
- Dicyclomine Hcl24 claims
- Famotidine16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,635.81
86 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Borland Groover Clinic, PAFleming Island, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer Chapman Knox among 1,513 gastroenterology physician records in Florida
Spencer Chapman Knox, M.D. is one of 1,513 gastroenterology physician records with a practice address in Florida. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 84% of them.
- NPI issued2015 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2014 · median 2000 among the 1,156 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 gastroenterology physician records list a practice address in Fleming Island
They are 6 of the 571 NPPES records with a practice address in Fleming Island, and 1,513 gastroenterology physician records in Florida.
All 1,513 in Florida → Every provider in Fleming Island → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Sian Chisholm, M.D.Fleming Island, FL 320031346392800
- Michael Herman, DOFleming Island, FL 320031831179290
- Vikas Patel, M.D.Fleming Island, FL 320031699119321
- Tarun Rai, M.D.Fleming Island, FL 320031821304353
- Peter Senada, MDFleming Island, FL 320031154958692
- Mohammad Faisal, M.D.Lake City, FL 320251801866405
- Ricardo Rosado, M.D.Lake City, FL 320251629048228
- Mary Barbara, MDFernandina Beach, FL 320341497195614
Common questions
What is Spencer Chapman Knox, M.D.'s NPI number?
Spencer Chapman Knox, M.D.'s National Provider Identifier (NPI) is 1205220688, issued on Mar 24, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Spencer Chapman Knox, M.D. located?
The NPPES record lists a practice address at 1747 Baptist Clay Dr Ste 300, Fleming Island, FL, 32003. Phone: (904) 214-8080. Providers update this record themselves, so call before visiting.
How can I verify Spencer Chapman Knox, M.D.'s license?
NPPES lists Florida license number ME148899, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Spencer Chapman Knox, M.D. prescribe under Medicare Part D?
In 2024, Spencer Chapman Knox, M.D. had 476 Medicare Part D claims for 212 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Spencer Chapman Knox, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.