John David Northup, M.D.
Gastroenterology Physician · Savannah, GA
John David Northup, M.D. is a gastroenterology physician with a practice address in Savannah, Georgia, and NPI 1023232527, issued on Apr 13, 2007. Check the license (Georgia 016651, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- John David Northup
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 016651 GA
Self-reported in NPPES; status is on the state search - Practice location
- 12345 Mercy Blvd, Savannah, GA 31419
- Phone
- (912) 927-3046
- Enumerated
- Apr 13, 2007
- Record last updated
- Jan 3, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (912) 925-0597
- Medicaid ID
- 000018092A GA
- Medicare enrollment
- Enrolled (PECOS I20051101000522); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 1967
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 530 in Georgia → Look up another NPI →
Also registered at 12345 Mercy Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Drake, MDCardiovascular Disease Physician1871684027
- Katherine Klick, FNP-CFamily Nurse Practitioner1518466556
- Courtney Sellers, PA-CGastroenterology Physician1124860606
Verify John David Northup in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 016651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8.8 times the Medicare Part D claims of the average gastroenterology physician in 2024
7,115 Medicare Part D claims for 359 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 326 claims were for opioids.
Most prescribed
- Ezetimibe349 claims
- Famotidine220 claims
- Amlodipine Besylate206 claims
- Atorvastatin Calcium206 claims
- Pantoprazole Sodium173 claims
- Levothyroxine Sodium172 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 MIPS final score for 2023 (Medicare payment program): 83.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,380.34
66 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.
John David Northup among 530 gastroenterology physician records in Georgia
John David Northup, M.D. is one of 530 gastroenterology physician records with a practice address in Georgia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 35% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1967 · median 2001 among the 397 with a school on file
- Record last updated2014 · 61% 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 Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Georgia
There are 530 gastroenterology physician records in Georgia.
All 530 in Georgia → Every provider in Savannah → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- John Schweistris, MDSavannah, GA 314191689676553
- Courtney Sellers, PA-CSavannah, GA 314191124860606
- Gregory Borak, MDSavannah, GA 314051255333142
- David Chalikian, MDSavannah, GA 314051700888682
- Branden Hunter, MDSavannah, GA 314051093717985
- William Mansour, M.D.Savannah, GA 314051043698053
- Matthew Mishoe, D.O.Savannah, GA 314051043578453
- Ansley Tharpe, MDSavannah, GA 314051386791234
Common questions
What is John David Northup, M.D.'s NPI number?
John David Northup, M.D.'s National Provider Identifier (NPI) is 1023232527, issued on Apr 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John David Northup, M.D. located?
The NPPES record lists a practice address at 12345 Mercy Blvd, Savannah, GA, 31419. Phone: (912) 927-3046. Providers update this record themselves, so call before visiting.
How can I verify John David Northup, M.D.'s license?
NPPES lists Georgia license number 016651, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John David Northup, M.D. prescribe under Medicare Part D?
In 2024, John David Northup, M.D. had 7,115 Medicare Part D claims for 359 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is John David Northup, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.1 of 100. 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.