Gregg W. Calderwood, M.D.
Obstetrics & Gynecology Physician · West Burlington, IA
Gregg W. Calderwood, M.D. is an obstetrics & gynecology physician with a practice address in West Burlington, Iowa, and NPI 1730140898, issued on Mar 29, 2006. Check the license (Iowa 22096, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregg W. Calderwood
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 22096 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1223 S Gear Ave, West Burlington, IA 52655
- Phone
- (319) 752-4541
- Enumerated
- Mar 29, 2006
- Record last updated
- Nov 6, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (319) 752-2972
- Medicaid ID
- 1730140898 IA
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 339 in Iowa → Look up another NPI →
Also registered at 1223 S Gear Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Daws, M.D.Pediatrics Physician1477508711
- Katlynn Dunkin, RN BSNStudent in an Organized Health Care Education/Training Program1568397552
- Anne Grieves, DOObstetrics & Gynecology Physician1861444614
- Erin Haeger, M.D.Obstetrics & Gynecology Physician1134387012
- Zeina Hajar, MDInfectious Disease Physician1124549720
- Carl Hays, M.D.Obstetrics & Gynecology Physician1366402810
Verify Gregg W. Calderwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 22096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
138 Medicare Part D claims for 44 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Estradiol30 claims
- Alendronate Sodium27 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): 77.8 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).
Gregg W. Calderwood among 339 obstetrics & gynecology physician records in Iowa
Gregg W. Calderwood, M.D. is one of 339 obstetrics & gynecology physician records with a practice address in Iowa. 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 25% of them.
- NPI issued2006 · 25% of these records are older, 49% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2012 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 obstetrics & gynecology physician records list a practice address in West Burlington
They are 6 of the 261 NPPES records with a practice address in West Burlington, and 339 obstetrics & gynecology physician records in Iowa.
All 339 in Iowa → Every provider in West Burlington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Anne Grieves, DOWest Burlington, IA 526551861444614
- Erin Haeger, M.D.West Burlington, IA 526551134387012
- Carl Hays, M.D.West Burlington, IA 526551366402810
- Kimberly Marshall, M.D.West Burlington, IA 526551225099302
- Michael McCoy, M.D.West Burlington, IA 526551003877184
- Robert Smith, M.D.Mt Pleasant, IA 526411710952833
- Mary Anna Woodard, MDMt Pleasant, IA 526411962515890
- Cristina Andia Rabo, MDFt Madison, IA 526271700856374
Common questions
What is Gregg W. Calderwood, M.D.'s NPI number?
Gregg W. Calderwood, M.D.'s National Provider Identifier (NPI) is 1730140898, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregg W. Calderwood, M.D. located?
The NPPES record lists a practice address at 1223 S Gear Ave, West Burlington, IA, 52655. Phone: (319) 752-4541. Providers update this record themselves, so call before visiting.
How can I verify Gregg W. Calderwood, M.D.'s license?
NPPES lists Iowa license number 22096, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregg W. Calderwood, M.D. prescribe under Medicare Part D?
In 2024, Gregg W. Calderwood, M.D. had 138 Medicare Part D claims for 44 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Gregg W. Calderwood, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.8 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.