Chamberlain Obialo, MD
NPI 1881694529 · Nephrology Physician · Atlanta, GA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chamberlain Obialo, MD is a Nephrology Physician provider in Atlanta, GA (NPI 1881694529).
Provider details
- NPI number
- 1881694529
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 038321 (GA)
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 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
248 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) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 118 | $344 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 61 | $77 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 52 | $48 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 17 | $169 |
Typical Medicare-allowed amounts for these services range $48–$344 (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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 57 | 22 |
| Sevelamer Carbonate | 55 | 20 |
| Amlodipine Besylate | 46 | 17 |
| Torsemide | 36 | 13 |
| Parenteral Amino Acid 20% No.1brand: Prosol | 33 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 28 | — |
| Carvedilol | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$132 across 7 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
- 2005-07-22
- Last updated
- 2015-05-28
Frequently asked questions
- What is Chamberlain Obialo's NPI number?
- Chamberlain Obialo's National Provider Identifier (NPI) is 1881694529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chamberlain Obialo's specialty?
- Chamberlain Obialo is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Chamberlain Obialo located?
- Chamberlain Obialo's practice location on file with NPPES is 1800 Howell Mill Rd, Atlanta, GA 30318-2538.
- What is Chamberlain Obialo's phone number?
- The practice phone number listed in the NPPES registry for Chamberlain Obialo is (404) 756-1480.
- Does Chamberlain Obialo accept Medicare?
- Chamberlain Obialo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chamberlain Obialo's NPI active?
- Yes — Chamberlain Obialo's NPI (1881694529) is active in the NPPES registry as of the last update on 2015-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.