Andrew Massar, PA-C
- Medicare patients, 2024
- 167
- Part D claims, 2024
- 1,335
- Hospital affiliations
- 2
- Industry payments
- $261
- Medical groups
- 2
- Practice address
- 1900 Wealthy SE St, Grand Rapids, MI 49506
- Practice phone
- Call (616) 459-0292
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Corewell Health Medical Group West
Grand Rapids, Michigan
Find Andrew Massar'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.
Andrew Massar is a physician assistant in Grand Rapids, Michigan
Andrew Massar practices at Corewell Health Medical Group West in Grand Rapids, Michigan.
Andrew Massar's NPI, 1205506748, was assigned on September 16, 2021. Andrew Massar holds Michigan license 5601010392.
- NPI
- 1205506748NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355739665
- NPI enumeration date
- September 16, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 459-0292
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Andrew Massar practices at Corewell Health Medical Group West in Grand Rapids, Michigan
Andrew Massar's primary practice is Corewell Health Medical Group West, at 1900 Wealthy SE St, Grand Rapids, MI 49506 in Kent County. The practice phone is (616) 459-0292.
- Corewell Health Medical Group West1900 Wealthy SE St, Grand Rapids, MI 49506 · Kent CountyPhone(616) 459-0292
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Andrew Massar is affiliated with 4 sites of care and 2 medical groups
Andrew Massar's primary practice is Corewell Health Medical Group West in Grand Rapids, Michigan. Andrew Massar is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Andrew Massar to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Andrew Massar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Andrew Massar practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Medical Group West | Available with a free account |
| +3 more sites and 1 medical group | 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.
Andrew Massar is one of 5,857 physician assistants in Michigan
Physician assistant is Andrew Massar's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Andrew Massar is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Andrew Massar
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
Andrew Massar treated 167 Medicare patients in 2024, average age 72
CMS counts 167 Medicare patients who saw Andrew Massar in 2024. The largest group is 65 to 74, with 92 patients. 74% of them have high blood pressure, and 68% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.32, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Andrew Massar's median patient age at 68, with 28% women.
Andrew Massar's Medicare patients by age, 2024
Andrew Massar's Medicare patients by sex, 2024
- Women148%
- Men15392%
Chronic conditions among Andrew Massar's Medicare patients, 2024
- High blood pressure74%
- High cholesterol68%
- Arthritis41%
- Diabetes34%
- Cancer29%
- Chronic kidney disease28%
- Ischemic heart disease26%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Andrew Massar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women28%
- Men71%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Andrew Massar wrote 1,335 Medicare Part D claims in 2024
In 2024, Andrew Massar wrote 1,335 Medicare Part D claims for 357 patients. 90% of them were for generic drugs.
Andrew Massar's Part D claims by kind of drug, 2024
- Generic1,199 claims90%
- Brand-name136 claims10%
Drug classes CMS tracks in Andrew Massar's Part D claims, 2024
- Antibiotics12%165 of 1,335 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 Andrew Massar takes part in Medicare
Andrew Massar 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.
Andrew Massar received $261 in industry payments in 2025
CMS Open Payments shows 8 general payments to Andrew Massar from 7 drug and device companies in 2025. Food and beverage make up the largest share, 62% of the total. Seagen Inc. paid the most, $100.
General payments to Andrew Massar by kind, 2025 to 2025
- Food and beverage$16162%
- Education$10038%
Companies that paid Andrew Massar 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 Andrew Massar'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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 Andrew Massar
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Andrew Massar's NPI number?
Andrew Massar's NPI number is 1205506748. It was assigned on September 16, 2021, and it is active in the NPI Registry.
What does Andrew Massar specialize in?
Andrew Massar is a physician assistant in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Andrew Massar practice?
Andrew Massar practices at 1900 Wealthy SE St, Grand Rapids, MI 49506. Andrew Massar's primary practice is Corewell Health Medical Group West in Grand Rapids, Michigan. Dmand AI also links Andrew Massar to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Andrew Massar's office phone number?
The practice phone on file for Andrew Massar is (616) 459-0292.
What is Andrew Massar's medical license number?
Andrew Massar holds Michigan license 5601010392.
Which hospitals is Andrew Massar affiliated with?
Andrew Massar is affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. Dmand AI links Andrew Massar to 1 more hospital.
What medical group is Andrew Massar part of?
Andrew Massar is linked to Corewell Health Medical Group West. Dmand AI links Andrew Massar to 1 more medical group.
Does Andrew Massar accept Medicare?
Yes. CMS lists Andrew Massar as accepting Medicare assignment.
How many Medicare patients does Andrew Massar see?
CMS counts 167 Medicare patients who saw Andrew Massar in 2024, with an average age of 72.
Has Andrew Massar received payments from drug or device companies?
CMS Open Payments shows $261 in general payments to Andrew Massar from 7 companies from 2025 to 2025. The largest total came from Seagen Inc.
How long has Andrew Massar been practicing?
Andrew Massar graduated from medical school in 2020, 6 years ago.
Selling to physician assistant practices?
See physician assistants 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