John S. Balocki, DO
Family Medicine Physician · Crystal Lake, IL
John S. Balocki, DO is a family medicine physician with a practice address in Crystal Lake, Illinois, and NPI 1801856117, issued on Mar 23, 2006. Check the license (Illinois 036073896, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John S. Balocki
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036073896 IL
Self-reported in NPPES; status is on the state search - Practice location
- 185 Heritage Drive, Crystal Lake, IL 60014
- Phone
- (815) 455-0310
- Enumerated
- Mar 23, 2006
- Record last updated
- Jan 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 455-1210
- Medicaid ID
- 036073896 IL
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify John S. Balocki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036073896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
138 Medicare Part D claims for 105 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass20 claims
- Azelastine Hcl13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John S. Balocki among 6,215 family medicine physician records in Illinois
John S. Balocki, DO is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2010 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Crystal Lake
They are 24 of the 1,442 NPPES records with a practice address in Crystal Lake, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Crystal Lake → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Muhammad Ali, M.D.Crystal Lake, IL 600141932201712
- Moriah Bang, D.O.Crystal Lake, IL 600141750393310
- Jamie Gancayco, MDCrystal Lake, IL 600141669470431
- Marina Gladson, MDCrystal Lake, IL 600141588751366
- Natalie Kostinsky, M.D.Crystal Lake, IL 600141205835881
- Marilyn Lacrosse, M.D.Crystal Lake, IL 600141255376885
- Michael Lesser, MDCrystal Lake, IL 600141760593032
- Yanbing Li, M.D.Crystal Lake, IL 600141104843739
Common questions
What is John S. Balocki, DO's NPI number?
John S. Balocki, DO's National Provider Identifier (NPI) is 1801856117, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John S. Balocki, DO located?
The NPPES record lists a practice address at 185 Heritage Drive, Crystal Lake, IL, 60014. Phone: (815) 455-0310. Providers update this record themselves, so call before visiting.
How can I verify John S. Balocki, DO's license?
NPPES lists Illinois license number 036073896, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John S. Balocki, DO prescribe under Medicare Part D?
In 2024, John S. Balocki, DO had 138 Medicare Part D claims for 105 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.