Gerald Machen, M.D.
NPI 1881676930 · Family Medicine Physician · Cullman, AL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerald Machen, M.D. is a Family Medicine Physician provider in Cullman, AL (NPI 1881676930).
Provider details
- NPI number
- 1881676930
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 11516 (AL)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
576 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 317 | $114 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 150 | $81 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 62 | $6 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 29 | $13 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 18 | $164 |
Typical Medicare-allowed amounts for these services range $6–$164 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 337 | 40 |
| Alprazolam | 310 | 38 |
| Gabapentin | 230 | 27 |
| Omeprazole | 163 | 50 |
| Levothyroxine Sodium | 119 | 31 |
| Pantoprazole Sodium | 112 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$102 across 6 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
- 2005-11-15
- Last updated
- 2025-12-31
- Certified
- 2025-12-31
Frequently asked questions
- What is Gerald Machen's NPI number?
- Gerald Machen's National Provider Identifier (NPI) is 1881676930, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Machen's specialty?
- Gerald Machen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Machen located?
- Gerald Machen's practice location on file with NPPES is 1800 Al Highway 157, Cullman, AL 35058-1271.
- What is Gerald Machen's phone number?
- The practice phone number listed in the NPPES registry for Gerald Machen is (256) 735-5075.
- Does Gerald Machen accept Medicare?
- Gerald Machen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerald Machen's NPI active?
- Yes — Gerald Machen's NPI (1881676930) is active in the NPPES registry as of the last update on 2025-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.