Gary Mollengarden, M.D.
NPI 1477658920 · Specialist · Bessemer, AL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Mollengarden, M.D. is a Specialist provider in Bessemer, AL (NPI 1477658920).
Provider details
- NPI number
- 1477658920
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 00012096 (AL)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
271 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 105 | $45 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 89 | $75 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 34 | $96 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 29 | $70 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 14 | $111 |
Typical Medicare-allowed amounts for these services range $45–$111 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$389 across 21 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
- 2006-09-13
- Last updated
- 2010-03-10
Frequently asked questions
- What is Gary Mollengarden's NPI number?
- Gary Mollengarden's National Provider Identifier (NPI) is 1477658920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Mollengarden's specialty?
- Gary Mollengarden is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Gary Mollengarden located?
- Gary Mollengarden's practice location on file with NPPES is 985 9th Ave Sw Ste 307, Bessemer, AL 35022-7809.
- What is Gary Mollengarden's phone number?
- The practice phone number listed in the NPPES registry for Gary Mollengarden is (205) 481-7384.
- Does Gary Mollengarden accept Medicare?
- Gary Mollengarden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Mollengarden's NPI active?
- Yes — Gary Mollengarden's NPI (1477658920) is active in the NPPES registry as of the last update on 2010-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.