Joy A. Hammack, CRNA
- Medicare patients, 2024
- 386
- MIPS score, 2024
- 83
- Hospital affiliations
- 2
- Industry payments
- $20
- Medical groups
- 8
- Practice address
- 901 Dulaney Valley Road Suite 220, Towson, MD 21204
- Practice phone
- Call (410) 583-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dulaney Eye Institute
Surgery Center - Medicare-Certified · Towson, Maryland
Find Joy Hammack'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.
Joy A. Hammack is a nurse anesthetist in Towson, Maryland
Joy Hammack practices at Dulaney Eye Institute in Towson, Maryland.
Joy Hammack's NPI, 1831435023, was assigned on December 17, 2012. Joy Hammack holds Maryland license 91236.
- NPI
- 1831435023NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123264454
- NPI enumeration date
- December 17, 2012
- NPI status
- Active
- Practice phone
- (410) 583-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Joy A. Hammack practices at Dulaney Eye Institute in Towson, Maryland
Joy Hammack's primary practice is Dulaney Eye Institute, at 901 Dulaney Valley Road Suite 220, Towson, MD 21204. The practice phone is (410) 583-1000.
- Dulaney Eye Institute901 Dulaney Valley Road Suite 220, Towson, MD 21204Phone(410) 583-1000
Source: Dmand AI Affiliation Data
Joy A. Hammack is affiliated with 6 sites of care and 8 medical groups
Joy Hammack's primary practice is Dulaney Eye Institute in Towson, Maryland. Joy Hammack is also affiliated with University of Maryland Medical Center. The medical group on file is Johns Hopkins University. Dmand AI also links Joy Hammack to 1 more hospital, 7 medical groups and 3 ambulatory surgery centers, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Joy A. Hammack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joy Hammack practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dulaney Eye Institute | Available with a free account |
| +5 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Joy A. Hammack is one of 871 nurse anesthetists in Maryland
Nurse anesthetist, certified registered is Joy Hammack's primary specialty in the NPI Registry, under taxonomy code 367500000X. Joy Hammack is licensed in Maryland.
Specialties and state licenses
- Certified registered nurse anesthetist, MarylandPrimary
Nurse anesthetists near Joy Hammack
Counts of nurse anesthetists 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
Joy A. Hammack treated 386 Medicare patients in 2024, average age 74
CMS counts 386 Medicare patients who saw Joy Hammack in 2024. The largest group is 65 to 74, with 195 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Joy Hammack's median patient age at 70, with 56% women.
Joy Hammack's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Joy Hammack's Medicare patients by sex, 2024
- Women23060%
- Men15640%
Chronic conditions among Joy Hammack's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis49%
- Diabetes32%
- Ischemic heart disease25%
- Chronic kidney disease23%
- Mood disorders23%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
Joy Hammack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joy A. Hammack scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Joy Hammack for performance year 2024, reported as part of a group.
Joy Hammack's MIPS scores, performance year 2024
- 83of 100Final score
- 73.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
Joy A. Hammack received $20 in industry payments in 2025
CMS Open Payments shows 1 general payment to Joy Hammack from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $20.
Companies that paid Joy Hammack 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 Joy A. Hammack'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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 Joy A. Hammack
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joy A. Hammack's NPI number?
Joy A. Hammack's NPI number is 1831435023. It was assigned on December 17, 2012, and it is active in the NPI Registry.
What does Joy A. Hammack specialize in?
Joy A. Hammack is a nurse anesthetist in Towson, Maryland. The primary specialty in the NPI Registry is Certified Registered Nurse Anesthetist (taxonomy code 367500000X).
Where does Joy A. Hammack practice?
Joy Hammack practices at 901 Dulaney Valley Road Suite 220, Towson, MD 21204. Joy Hammack's primary practice is Dulaney Eye Institute in Towson, Maryland. Dmand AI also links Joy Hammack to 1 hospital, 7 medical groups and 3 ambulatory surgery centers.
What is Joy A. Hammack's office phone number?
The practice phone on file for Joy Hammack is (410) 583-1000.
What is Joy A. Hammack's medical license number?
Joy Hammack holds Maryland license 91236.
Which hospitals is Joy A. Hammack affiliated with?
Joy Hammack is affiliated with University of Maryland Medical Center. Dmand AI links Joy Hammack to 1 more hospital.
What medical group is Joy A. Hammack part of?
Joy Hammack is linked to Johns Hopkins University. Dmand AI links Joy Hammack to 7 more medical groups.
What is Joy A. Hammack's MIPS score?
Joy Hammack's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Joy A. Hammack see?
CMS counts 386 Medicare patients who saw Joy Hammack in 2024, with an average age of 74.
Has Joy A. Hammack received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Joy Hammack from 1 company from 2025 to 2025. The largest total came from Bausch Health Americas, Inc.
How long has Joy A. Hammack been practicing?
Joy Hammack graduated from medical school in 2012, 14 years ago.
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