Nathan G. Baas, OD
- Medicare patients, 2024
- 115
- Part D claims, 2024
- 114
- Industry payments
- $188
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 515 S Union St, Traverse City, MI 49684-3246
- Practice phone
- Call (231) 946-0333
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Old Town Optical
Physician office · Traverse City, Michigan
Find Nathan Baas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Nathan G. Baas is an optometrist in Traverse City, Michigan
Nathan Baas practices at Old Town Optical in Traverse City, Michigan.
Nathan Baas' NPI, 1619039864, was assigned on December 14, 2006. Nathan Baas graduated from Ferris State College - College of Optometry in 2002. Nathan Baas holds Michigan license NB004139.
- NPI
- 1619039864NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193706232
- NPI enumeration date
- December 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (231) 946-0333
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan G. Baas practices at Old Town Optical in Traverse City, Michigan
Nathan Baas' primary practice is Old Town Optical, at 515 S Union St, Traverse City, MI 49684-3246. The practice phone is (231) 946-0333.
- Old Town Optical515 S Union St, Traverse City, MI 49684-3246Phone(231) 946-0333
Source: Dmand AI Affiliation Data
Nathan G. Baas is affiliated with 1 site of care
Nathan Baas' primary practice is Old Town Optical in Traverse City, Michigan.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Nathan G. Baas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Baas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Old Town Optical | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Nathan G. Baas is one of 1,416 optometrists in Michigan
Optometrist is Nathan Baas' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Nathan Baas is licensed in Michigan.
Specialties and state licenses
- Optometrist, MichiganPrimary
Optometrists near Nathan Baas
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Nathan G. Baas treated 115 Medicare patients in 2024, average age 77
CMS counts 115 Medicare patients who saw Nathan Baas in 2024. The largest group is 65 to 74, with 54 patients. 71% of them have high cholesterol, and 67% have high blood pressure. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Nathan Baas' median patient age at 77, with 61% women.
Nathan Baas' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Nathan Baas' Medicare patients by sex, 2024
- Women7162%
- Men4438%
Chronic conditions among Nathan Baas' Medicare patients, 2024
- High cholesterol71%
- High blood pressure67%
- Arthritis53%
- Diabetes33%
- Mood disorders29%
- Chronic kidney disease26%
- Depression26%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Nathan Baas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathan G. Baas wrote 114 Medicare Part D claims in 2024
In 2024, Nathan Baas wrote 114 Medicare Part D claims for 40 patients. 79% of them were for generic drugs.
Nathan Baas' Part D claims by kind of drug, 2024
- Generic90 claims79%
- Brand-name24 claims21%
Drug classes CMS tracks in Nathan Baas' Part D claims, 2024
- Antibiotics11%13 of 114 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Nathan G. Baas ranks in the 32nd percentile for cataract surgery in Medicare
Nathan Baas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of cataract surgery by Nathan Baas, more than 32% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Nathan Baas ranks in Medicare procedure volume
- Cataract surgery
- 32nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Nathan G. Baas received $188 in industry payments in 2025
CMS Open Payments shows 4 general payments to Nathan Baas from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Carl Zeiss Meditec USA, Inc. paid the most, $117.
Companies that paid Nathan Baas the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Nathan G. Baas graduated from Ferris State College - College of Optometry
Nathan Baas graduated from Ferris State College - College of Optometry in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Nathan G. Baas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Nathan G. Baas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nathan G. Baas' NPI number?
Nathan G. Baas' NPI number is 1619039864. It was assigned on December 14, 2006, and it is active in the NPI Registry.
What does Nathan G. Baas specialize in?
Nathan G. Baas is an optometrist in Traverse City, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Nathan G. Baas practice?
Nathan Baas practices at 515 S Union St, Traverse City, MI 49684-3246. Nathan Baas' primary practice is Old Town Optical in Traverse City, Michigan.
What is Nathan G. Baas' office phone number?
The practice phone on file for Nathan Baas is (231) 946-0333.
What is Nathan G. Baas' medical license number?
Nathan Baas holds Michigan license NB004139.
Does Nathan G. Baas accept Medicare?
Yes. CMS lists Nathan Baas as accepting Medicare assignment.
How many Medicare patients does Nathan G. Baas see?
CMS counts 115 Medicare patients who saw Nathan Baas in 2024, with an average age of 77.
Where did Nathan G. Baas go to medical school?
Nathan Baas graduated from Ferris State College - College of Optometry in 2002.
Has Nathan G. Baas received payments from drug or device companies?
CMS Open Payments shows $188 in general payments to Nathan Baas from 3 companies from 2025 to 2025. The largest total came from Carl Zeiss Meditec USA, Inc.
How long has Nathan G. Baas been practicing?
Nathan Baas graduated from medical school in 2002, 24 years ago.
Selling to optometrist practices?
See optometrists in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card