CMS-1500 Box 24J / 33a • NPI
1689756108
Type 1 Individual Rendering/Ordering
HIPAA NUCC Taxonomy • CMS Code
207RG0100X (CMS 10)
Board-Certified Gastroenterologist (Digestive Tract & Liver Specialist)
Box 32 Service Location & ZIP+4
1500 E MEDICAL CENTER DR, ANN ARBOR, MI, 48109-5000
✓ 9-Digit EDI 837 ZIP+4 (48109-5000)
✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR:
NPI
1689756108 (FREDERICK K ASKARI, MD, PhD) 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 #1689756108)
Medicare Beneficiaries
182
Total Billed Services
384
Distinct CPT/HCPCS Codes
34
Medicare Allowed Total
$45,885.69
Actual Top Billed CPT / HCPCS Procedures (CMS Part B)
| CPT / HCPCS | Clinical Procedure Description | Services |
|---|---|---|
45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 17 |
99205 | New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | 13 |
99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 32 |
99215 | Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | 56 |
99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 112 |
G2211 | Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | 33 |
Official CMS NPPES Credential & Practice Profile
| 10-Digit NPI Number | 1689756108 (NPI-1 Individual Practitioner) |
|---|---|
| Provider / Legal Name | FREDERICK K ASKARI, MD, PhD |
| Plain-English Specialty | Board-Certified Gastroenterologist (Digestive Tract & Liver Specialist) NUCC Code: 207RG0100X (Internal Medicine, Gastroenterology) |
| Certifying / Licensing Body | American Board of Internal Medicine — Gastroenterology |
| Practice Location Address | 1500 E MEDICAL CENTER DR, ANN ARBOR, MI, 48109-5000 |
| Practice Telephone / Fax | Tel: (734) 936-4000 |
| Administrative Mailing Address | 3621 S STATE ST, ANN ARBOR, MI, 48108-1633 |
| Enumeration & Last Sync | Enumerated: 2006-10-20 | CMS Record Updated: 2025-12-10 |
Clinic Location, Accessibility & Directions
📍 Practice Location & Patient Access
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Plain-English Taxonomy & CMS Crosswalk (207RG0100X)
What Does Taxonomy Code 207RG0100X Mean?
In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207RG0100X translates to:
"Board-Certified Gastroenterologist (Digestive Tract & Liver Specialist)"
Specialty Clinical Procedures & Therapeutic Classes
Standard Scope of Care (FREDERICK K ASKARI, MD, PhD)
Typical CPT / Diagnostic Procedures:- Screening & Diagnostic Colonoscopy with Polypectomy (CPT 45378–45385)
- Esophagogastroduodenoscopy / Upper GI Endoscopy (EGD — CPT 43239)
- Hepatic Elastography (FibroScan) & Fractionated Bilirubin/LFT Workup
- Internal Hemorrhoid Banding & Anorectal Diagnostic Evaluation
- Proton Pump Inhibitors (Omeprazole, Pantoprazole, Esomeprazole)
- H. pylori Quadruple & Triple Eradication Regimens
- Mesalamine & Biologic Immunomodulators (Inflammatory Bowel Disease)
- Osmotic Laxatives, Rifaximin & Ursodeoxycholic Acid
All Registered NUCC Taxonomies & State Licenses
| Taxonomy Code & Plain-English Description | State License & Primary Status |
|---|---|
207RG0100X — Internal Medicine, GastroenterologyPlain English: Board-Certified Gastroenterologist (Digestive Tract & Liver Specialist) | State: MI | License: 4301051394 | Primary: Yes (Primary) |
207SG0203X — Medical Genetics, Clinical Molecular GeneticsPlain English: Licensed & Credentialed Allopathic & Osteopathic Physicians — Medical Genetics — Clinical Molecular Genetics | State: MI | License: 4301051394 | Primary: Secondary |
Medical Billing, RCM & Hospital Credentialing Teams:
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