Mark William Jacob, DDS
General Practice Dentistry · Northbrook, IL
Mark William Jacob, DDS is a general practice dentistry with a practice address in Northbrook, Illinois, and NPI 1275659955, issued on Mar 22, 2007. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark William Jacob
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- Practice location
- 4119 Dundee RD, Northbrook, IL 60062
- Phone
- (847) 564-2180
- Enumerated
- Mar 22, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (847) 564-2466
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Verify Mark William Jacob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average general practice dentistry in 2024
47 Medicare Part D claims for 38 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin31 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.
Industry payments in 2024: $273.54
7 payments; by number, the most common kind was food and beverage; the largest payer was Zimvie Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark William Jacob among 5,276 general practice dentistry records in Illinois
Mark William Jacob, DDS is one of 5,276 general practice dentistry records with a practice address in Illinois. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 32% of them.
- NPI issued2007 · 32% of these records are older, 43% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 general practice dentistry records list a practice address in Northbrook
They are 30 of the 2,226 NPPES records with a practice address in Northbrook, and 5,276 general practice dentistry records in Illinois.
All 5,276 in Illinois → Every provider in Northbrook → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Tony Athans, D.D.S.Northbrook, IL 600621609085604
- Junho Baik, D.D.S.Northbrook, IL 600621053464032
- Scott Barrett, DMDNorthbrook, IL 600621982618039
- Howard Block, BSD DDSNorthbrook, IL 600621740312008
- Jane Graber, DENTISTNorthbrook, IL 600621750477535
- Mark Humenik, DDS, PCNorthbrook, IL 600621619093952
- Leonard Klayman, DDSNorthbrook, IL 600621841360724
- John Panzica, D.D.S.Northbrook, IL 600621093916231
Common questions
What is Mark William Jacob, DDS's NPI number?
Mark William Jacob, DDS's National Provider Identifier (NPI) is 1275659955, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark William Jacob, DDS located?
The NPPES record lists a practice address at 4119 Dundee RD, Northbrook, IL, 60062. Phone: (847) 564-2180. Providers update this record themselves, so call before visiting.
How can I verify Mark William Jacob, DDS's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mark William Jacob, DDS prescribe under Medicare Part D?
In 2024, Mark William Jacob, DDS had 47 Medicare Part D claims for 38 beneficiaries; the average among general practice dentistry prescribers was 83. 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.