Nathan G. Baas, O.D.
Optometrist · Traverse City, MI
Nathan G. Baas, O.D. is an optometrist with a practice address in Traverse City, Michigan, and NPI 1619039864, issued on Dec 14, 2006. Check the license (Michigan NB004139, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathan G. Baas
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- NB004139 MI
Self-reported in NPPES; status is on the state search - Practice location
- 515 S Union St, Traverse City, MI 49684
- Phone
- (231) 946-0333
- Enumerated
- Dec 14, 2006
- Record last updated
- Aug 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (231) 946-1665
- Medicaid IDs
- 944770039 MI
944717597 MI - Medicare enrollment
- Enrolled (PECOS I20040526000038); accepts Medicare assignment
- Medical or professional school
- Ferris State College - College Of Optometry, 2002
- Entity
- Type 1 · individual
Verify Nathan G. Baas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license NB004139Check 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 optometrist in 2024
114 Medicare Part D claims for 40 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Latanoprost32 claims
- Neomycin-Polymyxin-Dexameth19 claims
- Timolol Maleate17 claims
- Doxycycline Hyclate13 claims
- Dorzolamide-Timolol11 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.
Industry payments in 2024: $160.62
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 34,453 providers of this specialty with any payment received $769.99 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.
38 optometrist records list a practice address in Traverse City
They are 38 of the 3,536 NPPES records with a practice address in Traverse City, and 1,963 optometrist records in Michigan.
All 38 in Traverse City → All 1,963 in Michigan → Every provider in Traverse City →
Other optometrist records in Michigan
- Brooke Abbaya, ODTroy, MI1962062968
- Richard Abbott, O.D.Traverse City, MI1295721520
- Hussein AbdulameerAnn Arbor, MI1386340032
- Shaina AbrahamAnn Arbor, MI1649845389
- Suzanne Acanne, O.D.Detroit, MI1093804692
- Thomas Adamczak, O.D.Whitehall, MI1083614911
- Brittany Adams, O.D.Southfield, MI1659754505
- Daniel Adams, ODImlay City, MI1194861310
- James Adams, O.D.Portage, MI1336137397
- Shea Adams, ODGrosse Pointe, MI1710778691
Common questions
What is Nathan G. Baas, O.D.'s NPI number?
Nathan G. Baas, O.D.'s National Provider Identifier (NPI) is 1619039864, issued on Dec 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan G. Baas, O.D. located?
The NPPES record lists a practice address at 515 S Union St, Traverse City, MI, 49684. Phone: (231) 946-0333. Providers update this record themselves, so call before visiting.
How can I verify Nathan G. Baas, O.D.'s license?
NPPES lists Michigan license number NB004139, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Nathan G. Baas, O.D. prescribe under Medicare Part D?
In 2024, Nathan G. Baas, O.D. had 114 Medicare Part D claims for 40 beneficiaries; the average among optometrist prescribers was 277. 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.