Sidney Callahan, D.O.
Obstetrics & Gynecology Physician · Greensboro, NC
Sidney Callahan, D.O. is an obstetrics & gynecology physician with a practice address in Greensboro, North Carolina, and NPI 1083875223, issued on Jun 20, 2008. Check the license (North Carolina 2012-01437, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sidney Callahan
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 2012-01437 NC
OS015363 PA
Self-reported in NPPES; status is on the state search - Practice location
- 719 Green Valley RD, Greensboro, NC 27408
- Phone
- (336) 378-1110
- Enumerated
- Jun 20, 2008
- Entity
- Type 1 · individual
Also registered at 719 Green Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brook Amundson C Silva, MDObstetrics & Gynecology Physician1811954845
- Mark Anderson, MDObstetrics & Gynecology Physician1386616639
- Dyanna Clark, M.D.Obstetrics & Gynecology Physician1215222021
- Bobi Crump, CPNPPediatric Nurse Practitioner1184897480
- Donald Digby, M.D.Specialist1437142957
- Juan Fernandez, M.D.Specialist1033222435
Verify Sidney Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2012-01437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
59% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
67 Medicare Part D claims for 25 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol18 claims
- Alendronate Sodium13 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 Medicare quality score for 2023: 91.1 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: $12.82
1 payment, mostly food and beverage; the largest payer was Organon Llc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Uwh OF The Carolinas PLLCGreensboro, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Obstetrics & Gynecology Physician providers in North Carolina
There are 1,548 obstetrics & gynecology physician records in North Carolina.
All 1,548 in North Carolina → Every provider in Greensboro →
Other obstetrics & gynecology physician records in North Carolina
- Meaghan Aalto, MDLexington, NC1487940292
- Lara Aboulhosn, MDCharlotte, NC1134489396
- Tatiana Acosta, M.D., M.P.HRaleigh, NC1891228870
- Brandi Adams, MDHuntersville, NC1194015149
- Harvey Adams, M.D.Asheboro, NC1114221116
- Sharvari Adams, DOGreensboro, NC1407598170
- Todd Adams, MD, FACOG, MPHMooresville, NC1477585107
- Natasha Adams-Denny, MDCharlotte, NC1861413437
- Swati Adawadkar, MDCharlotte, NC1902004583
- George Adcock, M.D.Gastonia, NC1447246228
Common questions
What is Sidney Callahan, D.O.'s NPI number?
Sidney Callahan, D.O.'s National Provider Identifier (NPI) is 1083875223, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Sidney Callahan, D.O. located?
The NPPES record lists a practice address at 719 Green Valley RD, Greensboro, NC, 27408. Phone: (336) 378-1110. Providers update this record themselves, so call before visiting.
How can I verify Sidney Callahan, D.O.'s license?
NPPES lists North Carolina license number 2012-01437, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sidney Callahan, D.O. prescribe under Medicare Part D?
In 2024, Sidney Callahan, D.O. had 67 Medicare Part D claims for 25 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Sidney Callahan, D.O.'s Medicare quality score?
The 2023 MIPS final score is 91.1 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), loaded Aug 27, 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) 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 27, 2026.