Joy Hammack, CRNA
NPI 1831435023 · Certified Registered Nurse Anesthetist · Baltimore, MD
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joy Hammack, CRNA is a Certified Registered Nurse Anesthetist provider in Baltimore, MD (NPI 1831435023).
Provider details
- NPI number
- 1831435023
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- Yes
- License
- R177586 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
318 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 187 | $128 |
| Anesthesia for Other Procedure on Eye00140 | 50 | $181 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 22 | $99 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 18 | $135 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 18 | $124 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 12 | $165 |
| Anesthesia for Total Hip Replacement |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-12-17
- Last updated
- 2024-10-16
- Certified
- 2024-10-16
Frequently asked questions
- What is Joy Hammack's NPI number?
- Joy Hammack's National Provider Identifier (NPI) is 1831435023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joy Hammack's specialty?
- Joy Hammack is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joy Hammack located?
- Joy Hammack's practice location on file with NPPES is 22 S Greene St, Baltimore, MD 21201-1544.
- What is Joy Hammack's phone number?
- The practice phone number listed in the NPPES registry for Joy Hammack is (800) 492-5538.
- Does Joy Hammack accept Medicare?
- Joy Hammack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joy Hammack's NPI active?
- Yes — Joy Hammack's NPI (1831435023) is active in the NPPES registry as of the last update on 2024-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.