Mark Chylinski, MD
NPI 1710408539 · Internal Medicine Physician · California, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Chylinski, MD is a Internal Medicine Physician provider in California, MD (NPI 1710408539).
Provider details
- NPI number
- 1710408539
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D91250 (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 tenure25% of score
8 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
3,651 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 628 | $104 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 407 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 308 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 289 | $10 |
| Hemoglobin A1c Level83036 | 282 | $10 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 273 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 209 | 74 |
| Amlodipine Besylate | 166 | 59 |
| Lisinopril | 98 | 39 |
| Levothyroxine Sodium | 83 | 31 |
| Losartan Potassium | 82 | 30 |
| Rosuvastatin Calcium | 71 | 23 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$229 across 12 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
- 2017-07-01
- Last updated
- 2022-05-16
- Certified
- 2022-05-16
Frequently asked questions
- What is Mark Chylinski's NPI number?
- Mark Chylinski's National Provider Identifier (NPI) is 1710408539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Chylinski's specialty?
- Mark Chylinski is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Chylinski located?
- Mark Chylinski's practice location on file with NPPES is 22590 Shady Ct, California, MD 20619-5009.
- What is Mark Chylinski's phone number?
- The practice phone number listed in the NPPES registry for Mark Chylinski is (301) 373-7900.
- Does Mark Chylinski accept Medicare?
- Mark Chylinski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Chylinski's NPI active?
- Yes — Mark Chylinski's NPI (1710408539) is active in the NPPES registry as of the last update on 2022-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.