Joy A. Hammack, CRNA
Certified Registered Nurse Anesthetist · Baltimore, MD
Joy A. Hammack, CRNA is a certified registered nurse anesthetist with a practice address in Baltimore, Maryland, and NPI 1831435023, issued on Dec 17, 2012. Check the license (Maryland 91236, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joy A. Hammack
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License numbers
- 91236 MD
R177586 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (800) 492-5538
- Enumerated
- Dec 17, 2012
- Record last updated
- Oct 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20130411000255); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 1,062 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elsadig Abdalla, MDStudent in an Organized Health Care Education/Training Program1073364477
- Ehssan AbdolalizadehStudent in an Organized Health Care Education/Training Program1093653271
- Mohammad Abdulelah, MDStudent in an Organized Health Care Education/Training Program1114650108
- Leenah AbdulgaderStudent in an Organized Health Care Education/Training Program1386323301
- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify Joy A. Hammack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 91236Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $55.46
2 payments; by number, the most common kind was education; the largest payer was Qol Medical, LLC. The 24,076 providers of this specialty with any payment received $135.08 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 5 group practices
- Blackwell Anesthesia LLCEllicott City, MD
- Hitchens And Henke PAJarrettsville, MD
- Johns Hopkins UniversityColumbia, MD
- Katzen Medical Associates PCTowson, MD
- Ultracare Anesthesia Partners LLCBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joy A. Hammack among 1,062 certified registered nurse anesthetist records in Maryland
Joy A. Hammack, CRNA is one of 1,062 certified registered nurse anesthetist records with a practice address in Maryland. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 46% of them.
- NPI issued2012 · 46% of these records are older, 49% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2012 · median 2014 among the 774 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
504 certified registered nurse anesthetist records list a practice address in Baltimore
They are 504 of the 35,183 NPPES records with a practice address in Baltimore, and 1,062 certified registered nurse anesthetist records in Maryland.
All 1,062 in Maryland → Every provider in Baltimore → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Donald Anderson, CRNABaltimore, MD 212011891778510
- Bonjo Batoon, CRNABaltimore, MD 212011841209483
- Roger Baxter, CRNABaltimore, MD 212011427039940
- Patrick BurkeBaltimore, MD 212011821062134
- Matthew D'Angelo, C.R.N.A.Baltimore, MD 212011851328884
- Deborah Dlugose, CRNABaltimore, MD 212011457347031
- Sandra Foster, CRNABaltimore, MD 212011598703712
- Linda Goetz, C.R.N.A.Baltimore, MD 212011750310314
Common questions
What is Joy A. Hammack, CRNA's NPI number?
Joy A. Hammack, CRNA's National Provider Identifier (NPI) is 1831435023, issued on Dec 17, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Joy A. Hammack, CRNA located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (800) 492-5538. Providers update this record themselves, so call before visiting.
How can I verify Joy A. Hammack, CRNA's license?
NPPES lists Maryland license number 91236, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
What is Joy A. Hammack, CRNA's MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.