Mark Hacholski, M.D.
NPI 1568995694 · Family Medicine Physician · Chula Vista, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hacholski, M.D. is a Family Medicine Physician provider in Chula Vista, CA (NPI 1568995694).
Provider details
- NPI number
- 1568995694
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 84641 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 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
180 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 107 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 27 | $144 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 21 | $17 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 13 | $123 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 12 | $102 |
Typical Medicare-allowed amounts for these services range $17–$144 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 123 | 71 |
| Losartan Potassium | 103 | 51 |
| Levothyroxine Sodium | 82 | 39 |
| Metformin Hcl | 73 | 38 |
| Rosuvastatin Calcium | 60 | 29 |
| Amlodipine Besylate | 58 | 29 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-04-05
- Last updated
- 2024-12-13
- Certified
- 2024-12-13
Frequently asked questions
- What is Mark Hacholski's NPI number?
- Mark Hacholski's National Provider Identifier (NPI) is 1568995694, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hacholski's specialty?
- Mark Hacholski is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hacholski located?
- Mark Hacholski's practice location on file with NPPES is 525 Third Ave, Chula Vista, CA 91910-5696.
- What is Mark Hacholski's phone number?
- The practice phone number listed in the NPPES registry for Mark Hacholski is (619) 515-2424.
- Does Mark Hacholski accept Medicare?
- Mark Hacholski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hacholski's NPI active?
- Yes — Mark Hacholski's NPI (1568995694) is active in the NPPES registry as of the last update on 2024-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.