Christopher Ish, MD
NPI 1538263850 · Internal Medicine Physician · Glen Burnie, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Ish, MD is a Internal Medicine Physician provider in Glen Burnie, MD (NPI 1538263850).
Provider details
- NPI number
- 1538263850
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D53283 (MD)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
772 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 301 | $101 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 127 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 98 | $135 |
| 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'SG2211 | 63 | $17 |
| Administration of Influenza Virus VaccineG0008 | 62 | $34 |
| Hemoglobin A1c Level83036 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 237 | 75 |
| Losartan Potassium | 100 | 30 |
| Amlodipine Besylate | 95 | 27 |
| Lisinopril | 86 | 23 |
| Gabapentin | 68 | 20 |
| Metoprolol Succinate | 55 | 19 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2013-05-09
Frequently asked questions
- What is Christopher Ish's NPI number?
- Christopher Ish's National Provider Identifier (NPI) is 1538263850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Ish's specialty?
- Christopher Ish is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Ish located?
- Christopher Ish's practice location on file with NPPES is 7671 Quarterfield Rd, Glen Burnie, MD 21061-4998.
- What is Christopher Ish's phone number?
- The practice phone number listed in the NPPES registry for Christopher Ish is (443) 270-6760.
- Does Christopher Ish accept Medicare?
- Christopher Ish is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Ish's NPI active?
- Yes — Christopher Ish's NPI (1538263850) is active in the NPPES registry as of the last update on 2013-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.