Kathryn Stack, MD
NPI 1326081969 · Anesthesiology Physician · Old Lyme, CT
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Stack, MD is a Anesthesiology Physician provider in Old Lyme, CT (NPI 1326081969).
Provider details
- NPI number
- 1326081969
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 57186 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
209 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 43 | $93 |
| Anesthesia for Lens Surgery00142 | 37 | $60 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 35 | $113 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 32 | $98 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 18 | $78 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 16 | $186 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2021-12-23
- Certified
- 2021-12-23
Frequently asked questions
- What is Kathryn Stack's NPI number?
- Kathryn Stack's National Provider Identifier (NPI) is 1326081969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Stack's specialty?
- Kathryn Stack is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Stack located?
- Kathryn Stack's practice location on file with NPPES is 15 Wood Crest Dr, Old Lyme, CT 06371-2840.
- What is Kathryn Stack's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Stack is (404) 932-9109.
- Does Kathryn Stack accept Medicare?
- Kathryn Stack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Stack's NPI active?
- Yes — Kathryn Stack's NPI (1326081969) is active in the NPPES registry as of the last update on 2021-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.