Stephen Flack, M. D.
NPI 1396742631 · Hospitalist Physician · Chambersburg, PA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Flack, M. D. is a Hospitalist Physician provider in Chambersburg, PA (NPI 1396742631).
Provider details
- NPI number
- 1396742631
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD069240L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
26 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,429 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 437 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 348 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 319 | $16 |
| Administration of Influenza Virus VaccineG0008 | 99 | $31 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 97 | $85 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 116 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 342 | 91 |
| Atorvastatin Calcium | 334 | 95 |
| Levothyroxine Sodium | 265 | 62 |
| Amlodipine Besylate | 254 | 64 |
| Omeprazole | 231 | 60 |
| Gabapentin | 228 | 54 |
| Metformin Hcl |
Practice location
Mailing address
Additional practice locations (25)
- 354 Alexander Spring Rd Ste 3Carlisle, PA 17015-7451Phone: (717) 477-2764
- 220 Wilson St Ste 109Carlisle, PA 17013-3697Phone: (717) 249-1929
- 1425 Philadelphia AveChambersburg, PA 17201-1386Phone: (717) 217-6055
- 2055 Scotland AveChambersburg, PA 17201-1451Phone: (717) 217-6055Fax: (717) 217-4329
- 1000 Norland AveChambersburg, PA 17201-4229Phone: (717) 267-6363
- 12 St Paul Dr Ste 203Chambersburg, PA 17201-1035Phone: (717) 264-6511Fax: (717) 264-1081
- 12 St Paul Dr Ste 101Chambersburg, PA 17201-1035Phone: (717) 217-6760Fax: (717) 217-6912
- 2075 Scotland AveChambersburg, PA 17201-1451Phone: (717) 217-6055
- 112 N 7th St
Registry dates
- Enumerated
- 2005-07-01
- Last updated
- 2025-08-27
- Certified
- 2025-08-27
Frequently asked questions
- What is Stephen Flack's NPI number?
- Stephen Flack's National Provider Identifier (NPI) is 1396742631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Flack's specialty?
- Stephen Flack is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Flack located?
- Stephen Flack's practice location on file with NPPES is 3106 Philadelphia Ave, Chambersburg, PA 17201-8938.
- What is Stephen Flack's phone number?
- The practice phone number listed in the NPPES registry for Stephen Flack is (717) 264-3644.
- Does Stephen Flack accept Medicare?
- Stephen Flack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Flack's NPI active?
- Yes — Stephen Flack's NPI (1396742631) is active in the NPPES registry as of the last update on 2025-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.