Andrew Killen, MD
NPI 1528231552 · Family Medicine Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Killen, MD is a Family Medicine Physician provider in Stamford, CT (NPI 1528231552).
Provider details
- NPI number
- 1528231552
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 046395 (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
18 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
1,138 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 445 | $94 |
| Acupuncture, Each Additional 15 Minutes97811 | 306 | $29 |
| Acupuncture, Initial 15 Minutes97810 | 153 | $40 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 58 | $16 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 55 | $41 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 52 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 135 | 132 |
| Azithromycin | 124 | 122 |
| Naproxen | 89 | 87 |
| Triamcinolone Acetonide | 51 | 46 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 49 | 48 |
| Cephalexin | 43 | 42 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 41 | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-10
- Last updated
- 2015-09-14
Frequently asked questions
- What is Andrew Killen's NPI number?
- Andrew Killen's National Provider Identifier (NPI) is 1528231552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Killen's specialty?
- Andrew Killen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Killen located?
- Andrew Killen's practice location on file with NPPES is 90 Morgan St Ste 108, Stamford, CT 06905-5436.
- What is Andrew Killen's phone number?
- The practice phone number listed in the NPPES registry for Andrew Killen is (203) 359-9997.
- Does Andrew Killen accept Medicare?
- Andrew Killen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Killen's NPI active?
- Yes — Andrew Killen's NPI (1528231552) is active in the NPPES registry as of the last update on 2015-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.