William J. Chernack, MD
Allergy Physician · Morristown, NJ
William J. Chernack, MD is an allergy physician with a practice address in Morristown, New Jersey, and NPI 1013941012, issued on Jul 10, 2006. Check the license (New Jersey 25MA03168500, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William J. Chernack
- Credential
- MD
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 25MA03168500 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 28 Franklin PL, Morristown, NJ 07960
- Phone
- (973) 538-7271
- Enumerated
- Jul 10, 2006
- Record last updated
- Jun 17, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (973) 538-7491
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 42 in New Jersey → Look up another NPI →
Verify William J. Chernack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA03168500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average allergy physician in 2024
101 Medicare Part D claims for 30 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Montelukast Sodium26 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.
William J. Chernack among 42 allergy physician records in New Jersey
William J. Chernack, MD is one of 42 allergy physician records with a practice address in New Jersey. 76% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 38% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2008 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in New Jersey
There are 42 allergy physician records in New Jersey.
All 42 in New Jersey → Every provider in Morristown → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Donatella Graffino, MDCedar Knolls, NJ 079271952302192
- John Oppenheimer, MDCedar Knolls, NJ 079271639170871
- Rebecca Friess, M.D.Berkeley Heights, NJ 079221487098588
- Kristine Cisko, PA-CSummit, NJ 079011780884346
- Nicholas Romanoff, MDCherry Hill, NJ 080341316903313
- Maria Lania-Howarth, MDVoorhees, NJ 080431861574295
- Shashank Sheth, M DVoorhees, NJ 080431528272432
- Colin Reisner, M.D.Morristown, NJ 078691538311311
Common questions
What is William J. Chernack, MD's NPI number?
William J. Chernack, MD's National Provider Identifier (NPI) is 1013941012, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Chernack, MD located?
The NPPES record lists a practice address at 28 Franklin PL, Morristown, NJ, 07960. Phone: (973) 538-7271. Providers update this record themselves, so call before visiting.
How can I verify William J. Chernack, MD's license?
NPPES lists New Jersey license number 25MA03168500, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William J. Chernack, MD prescribe under Medicare Part D?
In 2024, William J. Chernack, MD had 101 Medicare Part D claims for 30 beneficiaries; the average among allergy physician prescribers was 750. 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.