CMS-1500 Box 24J / 33a • NPI
1548265135
Type 1 Individual Rendering/Ordering
HIPAA NUCC Taxonomy • CMS Code
207RN0300X (CMS 11)
Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist)
Box 32 Service Location & ZIP+4
9229 TAFT ST, MERRILLVILLE, IN, 46410-6911
✓ 9-Digit EDI 837 ZIP+4 (46410-6911)
✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR:
NPI
1548265135 (MAHER AJAM, M.D.) has 0 active federal exclusions across all 84,224 HHS OIG LEIE sanction records (Database Verified: 2026-11-11).
CMS Medicare Order & Referring PECOS Eligibility
Medicare Part B
✓ Eligible
DMEPOS Ordering
✓ Eligible
Home Health (HHA)
✓ Eligible
Power Mobility
✓ Eligible
Hospice Referring
✓ Eligible
Empirical CMS Medicare Claims, CPT Utilization & Part D Prescribing (NPI #1548265135)
Medicare Beneficiaries
573
Total Billed Services
2,256
Distinct CPT/HCPCS Codes
18
Medicare Allowed Total
$295,834.17
Actual Top Billed CPT / HCPCS Procedures (CMS Part B)
| CPT / HCPCS | Clinical Procedure Description | Services |
|---|---|---|
90937 | Hemodialysis procedure requiring repeated evaluation | 15 |
90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 323 |
90961 | Dialysis services, 2-3 physician visits per month (20 years or older) | 33 |
99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | 17 |
99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 33 |
99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 311 |
99215 | Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | 29 |
99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 181 |
Actual Top Prescribed Medications (CMS Part D)
| Brand / Generic Medication | Total Claims | Patients |
|---|---|---|
| Allopurinol Allopurinol | 84 | 24 |
| Alprazolam Alprazolam | 12 | <11 |
| Amlodipine Besylate Amlodipine Besylate | 164 | 62 |
| Atorvastatin Calcium Atorvastatin Calcium | 130 | 39 |
| Azithromycin Azithromycin | 11 | <11 |
| Bumetanide Bumetanide | 12 | <11 |
| Calcium Acetate Calcium Acetate | 62 | 17 |
| Carvedilol Carvedilol | 117 | 39 |
Official CMS NPPES Credential & Practice Profile
| 10-Digit NPI Number | 1548265135 (NPI-1 Individual Practitioner) |
|---|---|
| Provider / Legal Name | MAHER AJAM, M.D. |
| Plain-English Specialty | Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist) NUCC Code: 207RN0300X (Internal Medicine, Nephrology) |
| Certifying / Licensing Body | American Board of Internal Medicine — Nephrology |
| Practice Location Address | 9229 TAFT ST, MERRILLVILLE, IN, 46410-6911 |
| Practice Telephone / Fax | Tel: (219) 769-5227 | Fax: (219) 769-7355 |
| Administrative Mailing Address | 801 MACARTHUR BLVD, MUNSTER, IN, 46321-2915 |
| Enumeration & Last Sync | Enumerated: 2005-06-20 | CMS Record Updated: 2014-02-14 |
Clinic Location, Accessibility & Directions
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Plain-English Taxonomy & CMS Crosswalk (207RN0300X)
What Does Taxonomy Code 207RN0300X Mean?
In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207RN0300X translates to:
"Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist)"
Specialty Clinical Procedures & Therapeutic Classes
Standard Scope of Care (MAHER AJAM, M.D.)
Typical CPT / Diagnostic Procedures:- Chronic Kidney Disease (eGFR & Albuminuria) Staging & Renoprotective Planning
- 24-Hour Urine Metabolic Evaluation for Recurrent Kidney Stones
- Outpatient Hemodialysis & Peritoneal Dialysis Oversight (CPT 90960)
- Renal Biopsy Evaluation & Secondary Hypertension Workup
- SGLT2 Inhibitors (Dapagliflozin, Empagliflozin) & Finerenone for CKD
- ACE Inhibitors / ARBs for Proteinuria Reduction
- Potassium Citrate & Thiazide Diuretics (Kidney Stone Prevention)
- Erythropoiesis-Stimulating Agents & Phosphate Binders
All Registered NUCC Taxonomies & State Licenses
| Taxonomy Code & Plain-English Description | State License & Primary Status |
|---|---|
207RN0300X — Internal Medicine, NephrologyPlain English: Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist) | State: IN | License: 01035956A | Primary: Yes (Primary) |
207R00000X — Internal MedicinePlain English: Board-Certified Internist (Adult Diagnostic & Chronic Disease Physician) | State: IN | License: 01035956 | Primary: Secondary |
Medical Billing, RCM & Hospital Credentialing Teams:
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