Marissa Hay, FNP
- Part D claims, 2024
- 224
- Hospital affiliations
- 1
- Industry payments
- $101
- Medical groups
- 2
- State license
- 1
- Practice address
- 2000 15th N St, Arlington, VA 22201
- Practice phone
- Call (443) 444-5606
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Medstar Medical Group II
Arlington, Virginia
Find Marissa Hay'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.
Marissa Hay is a family nurse practitioner in Arlington, Virginia
Marissa Hay practices at Medstar Medical Group II in Arlington, Virginia.
Marissa Hay's NPI, 1346006913, was assigned on February 22, 2024. Marissa Hay holds District of Columbia license NP1047327.
- NPI
- 1346006913NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789128182
- NPI enumeration date
- February 22, 2024
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (443) 444-5606
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Marissa Hay practices at Medstar Medical Group II in Arlington, Virginia
Marissa Hay's primary practice is Medstar Medical Group II, at 2000 15th N St, Arlington, VA 22201 in Arlington County. The practice phone is (443) 444-5606.
- Medstar Medical Group II2000 15th N St, Arlington, VA 22201 · Arlington CountyPhone(443) 444-5606
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Marissa Hay is affiliated with 2 sites of care and 2 medical groups
Marissa Hay's primary practice is Medstar Medical Group II in Arlington, Virginia. Marissa Hay is also affiliated with MedStar Georgetown University Hospital. The medical group on file is MedStar Medical Group. Dmand AI also links Marissa Hay to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marissa Hay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marissa Hay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Medstar Medical Group II | Available with a free account |
| +1 more site 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.
Marissa Hay is one of 4,876 family nurse practitioners in Virginia
Family is Marissa Hay's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Marissa Hay is licensed in District of Columbia.
Specialties and state licenses
- Family nurse practitioner, District of ColumbiaPrimary
Family nurse practitioners near Marissa Hay
Counts of family nurse practitioners 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
Marissa Hay's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Marissa Hay's median patient age at 65, with 33% women.
Marissa Hay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women33%
- Men66%
Source: Dmand AI Patient Panel Data
Marissa Hay wrote 224 Medicare Part D claims in 2024
In 2024, Marissa Hay wrote 224 Medicare Part D claims for 58 patients. 93% of them were for generic drugs.
Marissa Hay's Part D claims by kind of drug, 2024
- Generic208 claims93%
- Brand-name and other16 claims7%
Drug classes CMS tracks in Marissa Hay's Part D claims, 2024
- Antibiotics6%13 of 224 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 Marissa Hay takes part in Medicare
Marissa Hay 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.
Marissa Hay received $101 in industry payments in 2025
CMS Open Payments shows 1 general payment to Marissa Hay from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Madrigal Pharmaceuticals paid the most, $101.
Companies that paid Marissa Hay 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 Marissa Hay'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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Marissa Hay
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marissa Hay's NPI number?
Marissa Hay's NPI number is 1346006913. It was assigned on February 22, 2024, and it is active in the NPI Registry.
What does Marissa Hay specialize in?
Marissa Hay is a family nurse practitioner in Arlington, Virginia. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Marissa Hay practice?
Marissa Hay practices at 2000 15th N St, Arlington, VA 22201. Marissa Hay's primary practice is Medstar Medical Group II in Arlington, Virginia. Dmand AI also links Marissa Hay to 1 medical group.
What is Marissa Hay's office phone number?
The practice phone on file for Marissa Hay is (443) 444-5606.
What is Marissa Hay's medical license number?
Marissa Hay holds District of Columbia license NP1047327.
Which hospitals is Marissa Hay affiliated with?
Marissa Hay is affiliated with MedStar Georgetown University Hospital.
What medical group is Marissa Hay part of?
Marissa Hay is linked to MedStar Medical Group. Dmand AI links Marissa Hay to 1 more medical group.
Does Marissa Hay accept Medicare?
Yes. CMS lists Marissa Hay as accepting Medicare assignment.
Has Marissa Hay received payments from drug or device companies?
CMS Open Payments shows $101 in general payments to Marissa Hay from 1 company from 2025 to 2025. The largest total came from Madrigal Pharmaceuticals.
How long has Marissa Hay been practicing?
Marissa Hay graduated from medical school in 2023, 3 years ago.
Selling to family practices?
See family nurse practitioners in Virginia 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