Marckenley Isaac, MD
NPI 1689234106 · Anesthesiology Physician · Marietta, GA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marckenley Isaac, MD is a Anesthesiology Physician provider in Marietta, GA (NPI 1689234106).
Provider details
- NPI number
- 1689234106
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 100785 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
22 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 11 | $79 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $76–$79 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 30 | 19 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 24 | 21 |
| Pregabalin | 22 | — |
| Tramadol Hcl | 18 | 14 |
| Oxycodone Hcl | 15 | 12 |
| Diclofenac Sodium | 12 | — |
| Duloxetine Hcl | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$211 across 3 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 (1)
- 374 Stockholm StBrooklyn, NY 11237-4006Phone: (718) 963-7272
Registry dates
- Enumerated
- 2019-06-17
- Last updated
- 2026-05-19
- Certified
- 2026-05-19
Frequently asked questions
- What is Marckenley Isaac's NPI number?
- Marckenley Isaac's National Provider Identifier (NPI) is 1689234106, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marckenley Isaac's specialty?
- Marckenley Isaac is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marckenley Isaac located?
- Marckenley Isaac's practice location on file with NPPES is 2540 Windy Hill Rd Se, Marietta, GA 30067-8605.
- What is Marckenley Isaac's phone number?
- The practice phone number listed in the NPPES registry for Marckenley Isaac is (470) 644-1274.
- Does Marckenley Isaac accept Medicare?
- Marckenley Isaac is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marckenley Isaac's NPI active?
- Yes — Marckenley Isaac's NPI (1689234106) is active in the NPPES registry as of the last update on 2026-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.