Gwen H. Haas, MD
Family Medicine Physician · Willowick, OH
Gwen H. Haas, MD is a family medicine physician with a practice address in Willowick, Ohio, and NPI 1710092267, issued on Aug 21, 2006. Check the license (Ohio 35058311, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Gwen H. Haas
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 35058311 OH
Self-reported in NPPES; status is on the state search - Practice location
- 29804 Lakeshore Blvd, Willowick, OH 44095
- Phone
- (440) 833-2095
- Enumerated
- Aug 21, 2006
- Record last updated
- Feb 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (440) 833-2096
- Medicaid ID
- 857390 OH
- Medicare enrollment
- Enrolled (PECOS I20040520000375); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 29804 Lakeshore Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Britt Conroy, MD, PHDFamily Medicine Physician1174813638
Verify Gwen H. Haas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35058311Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average family medicine physician in 2024
4,681 Medicare Part D claims for 591 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium519 claims
- Amlodipine Besylate383 claims
- Lisinopril265 claims
- Levothyroxine Sodium244 claims
- Losartan Potassium187 claims
- Metformin Hcl144 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.
One hospital affiliation
- Cleveland ClinicChardon, OH · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gwen H. Haas among 5,606 family medicine physician records in Ohio
Gwen H. Haas, MD is one of 5,606 family medicine physician records with a practice address in Ohio. 80% 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 18% of them.
- NPI issued2006 · 18% of these records are older, 48% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2005 among the 3,510 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Willowick
They are 5 of the 139 NPPES records with a practice address in Willowick, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in Willowick → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Carla Baster, D.O.Timberlake, OH 440951831261015
- Angela Brinkman, DOWillowick, OH 440951982797874
- Britt Conroy, MD, PHDWillowick, OH 440951174813638
- Smita Majmudar, MDWillowick, OH 440951467413500
- Kelly McPhillips, M.D.Willowick, OH 440951528593894
- John Bertsch, MDWilloughby Hills, OH 440941326004334
- Christina Chandler, REGISTERED NURSEWilloughby, OH 440941679125637
- Ming Huei Chiang, M.D.Willoughby, OH 440941013907989
Common questions
What is Gwen H. Haas, MD's NPI number?
Gwen H. Haas, MD's National Provider Identifier (NPI) is 1710092267, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gwen H. Haas, MD located?
The NPPES record lists a practice address at 29804 Lakeshore Blvd, Willowick, OH, 44095. Phone: (440) 833-2095. Providers update this record themselves, so call before visiting.
How can I verify Gwen H. Haas, MD's license?
NPPES lists Ohio license number 35058311, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gwen H. Haas, MD prescribe under Medicare Part D?
In 2024, Gwen H. Haas, MD had 4,681 Medicare Part D claims for 591 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.