Nathan David Griswold, PA-C
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 253
- Hospital affiliations
- 2
- Industry payments
- $162
- Medical group
- 1
- Practice address
- 5900 Byron Center Avenue, SW, Wyoming, MI 49519
- Practice phone
- Call (616) 252-7200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Nathan Griswold's 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 David Griswold is a physician assistant in Wyoming, Michigan
Nathan Griswold practices at University of Michigan Health-West Hospital in Wyoming, Michigan, part of University of Michigan.
Nathan Griswold's NPI, 1336305150, was assigned on July 31, 2008. Nathan Griswold holds Michigan license 5601005279.
- NPI
- 1336305150NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648305904
- NPI enumeration date
- July 31, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 252-7200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan David Griswold practices at University of Michigan Health-West Hospital in Wyoming, Michigan
Nathan Griswold's primary practice is University of Michigan Health-West Hospital, at 5900 Byron Center Avenue, SW, Wyoming, MI 49519 in Kent County. The practice phone is (616) 252-7200.
- University of Michigan Health-West Hospital5900 Byron Center Avenue, SW, Wyoming, MI 49519 · Kent CountyPhone(616) 252-7200
Source: Dmand AI Affiliation Data
Nathan David Griswold is affiliated with 2 sites of care and 1 medical group
Nathan Griswold's primary practice is University of Michigan Health-West Hospital in Wyoming, Michigan, part of University of Michigan. Nathan Griswold is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. The medical group on file is University of Michigan Health-West Hospital (formerly Metro Health Hospital). Nathan Griswold's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Nathan David Griswold's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Griswold practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Michigan Health-West Hospital | Available with a free account |
| +1 more affiliated site | 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 University of Michigan and 6.2K+ hospitals, with verified contacts in the same login.
Nathan David Griswold is one of 5,857 physician assistants in Michigan
Physician assistant is Nathan Griswold's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Nathan Griswold is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Nathan Griswold
Counts of physician assistants 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 David Griswold treated 11 Medicare patients in 2024, average age 69
CMS counts 11 Medicare patients who saw Nathan Griswold in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Nathan Griswold's median patient age at 64, with 25% women.
Nathan Griswold's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Nathan Griswold's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women25%
- Men75%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathan David Griswold wrote 253 Medicare Part D claims in 2024
In 2024, Nathan Griswold wrote 253 Medicare Part D claims for 55 patients. 96% of them were for generic drugs.
Nathan Griswold's Part D claims by kind of drug, 2024
- Generic242 claims96%
- Brand-name and other11 claims4%
Drug classes CMS tracks in Nathan Griswold's Part D claims, 2024
- Opioids12%30 of 253 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
How Nathan David Griswold takes part in Medicare
Nathan Griswold accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (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 David Griswold received $162 in industry payments in 2025
CMS Open Payments shows 2 general payments to Nathan Griswold from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AtriCure, Inc. paid the most, $122.
Companies that paid Nathan Griswold the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Nathan David Griswold'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 DataDmand AI Org Hierarchy 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 David Griswold
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 David Griswold's NPI number?
Nathan David Griswold's NPI number is 1336305150. It was assigned on July 31, 2008, and it is active in the NPI Registry.
What does Nathan David Griswold specialize in?
Nathan David Griswold is a physician assistant in Wyoming, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Nathan David Griswold practice?
Nathan Griswold practices at 5900 Byron Center Avenue, SW, Wyoming, MI 49519. Nathan Griswold's primary practice is University of Michigan Health-West Hospital in Wyoming, Michigan, part of University of Michigan.
What is Nathan David Griswold's office phone number?
The practice phone on file for Nathan Griswold is (616) 252-7200.
What is Nathan David Griswold's medical license number?
Nathan Griswold holds Michigan license 5601005279.
Which hospitals is Nathan David Griswold affiliated with?
Nathan Griswold practices at University of Michigan Health-West Hospital in Wyoming, Michigan. Nathan Griswold is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth.
What medical group is Nathan David Griswold part of?
Nathan Griswold is linked to University of Michigan Health-West Hospital (formerly Metro Health Hospital).
Does Nathan David Griswold accept Medicare?
Yes. CMS lists Nathan Griswold as accepting Medicare assignment.
How many Medicare patients does Nathan David Griswold see?
CMS counts 11 Medicare patients who saw Nathan Griswold in 2024, with an average age of 69.
Has Nathan David Griswold received payments from drug or device companies?
CMS Open Payments shows $162 in general payments to Nathan Griswold from 2 companies from 2025 to 2025. The largest total came from AtriCure, Inc.
How long has Nathan David Griswold been practicing?
Nathan Griswold graduated from medical school in 2008, 18 years ago.
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