Patrick Hammen, M.D.
NPI 1164461505 · Colon & Rectal Surgery Physician · Smyrna, GA
Enrolled with Medicare as Practitioner - Colorectal Surgery (proctology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Hammen, M.D. is a Colon & Rectal Surgery Physician provider in Smyrna, GA (NPI 1164461505).
Provider details
- NPI number
- 1164461505
- Entity type
- Individual
- Primary specialty
- Colon & Rectal Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 043383 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
151 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $92 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 38 | $111 |
| Diagnostic Exam of Anus Using an Endoscope46600 | 26 | $116 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 17 | $50 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 12 | $186 |
| Partial Removal of Large Bowel Using an Endoscope44204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 63 | 62 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 54 | 42 |
| Hydrocortisone | 28 | 22 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 28 | 24 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 16 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$220 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
Additional practice locations (2)
- 4750 Waters AveSuite 103Savannah, GA 31404-6200Phone: (912) 350-8712Fax: (912) 350-8753
- 4750 Waters AveSuite 103Savannah, GA 31404-6200Phone: (912) 350-8712Fax: (912) 350-8753
Registry dates
- Enumerated
- 2006-06-04
- Last updated
- 2019-10-09
Frequently asked questions
- What is Patrick Hammen's NPI number?
- Patrick Hammen's National Provider Identifier (NPI) is 1164461505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Hammen's specialty?
- Patrick Hammen is listed in the NPPES registry with a primary specialty of Colon & Rectal Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Hammen located?
- Patrick Hammen's practice location on file with NPPES is 4441 Atlanta Rd Se Ste 312, Smyrna, GA 30080.
- What is Patrick Hammen's phone number?
- The practice phone number listed in the NPPES registry for Patrick Hammen is (470) 956-4200.
- Does Patrick Hammen accept Medicare?
- Patrick Hammen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Hammen's NPI active?
- Yes — Patrick Hammen's NPI (1164461505) is active in the NPPES registry as of the last update on 2019-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.