Gary C. Pien, MD, PHD
Allergy & Immunology Physician · Berkeley Heights, NJ
Gary C. Pien, MD, PHD is an allergy & immunology physician with a practice address in Berkeley Heights, New Jersey, and NPI 1841404530, issued on May 10, 2007. Check the license (New Jersey 25MA08470800, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gary C. Pien
- Credential
- MD, PHD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 25MA08470800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 1 Diamond Hill RD, Berkeley Heights, NJ 07922
- Phone
- (908) 273-4300
- Enumerated
- May 10, 2007
- Record last updated
- Feb 18, 2026
- Medicare enrollment
- Enrolled (PECOS I20090424000281); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 132 in New Jersey → Look up another NPI →
Also registered at 1 Diamond Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary C. Pien 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 25MA08470800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
330 Medicare Part D claims for 79 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Montelukast Sodium53 claims
- Azelastine Hcl48 claims
- Levocetirizine Dihydrochloride21 claims
- Xolair20 claims
- Qnasl19 claims
- Advair Hfa17 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: $277.30
5 payments; by number, the most common kind was food and beverage; the largest payer was Optinose US, Inc. The 2,496 providers of this specialty with any payment received $8,321.81 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.
Bills Medicare through one group practice
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary C. Pien among 132 allergy & immunology physician records in New Jersey
Gary C. Pien, MD, PHD is one of 132 allergy & immunology physician records with a practice address in New Jersey. 90% 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 58% of them.
- NPI issued2007 · 58% of these records are older, 31% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2003 · median 1997 among the 104 with a school on file
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X 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 & Immunology Physician providers in New Jersey
There are 132 allergy & immunology physician records in New Jersey.
All 132 in New Jersey → Every provider in Berkeley Heights → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Saritha Kartan, MDBerkeley Heights, NJ 079221427376870
- Smruti Parikh, M.D.Florham Park, NJ 079321477561249
- Shirin Jadidi, MDMendham, NJ 079451386070340
- Salwa Elias, MDMorris Plains, NJ 079501568482073
- Maaz Jalil, D.O.Morristown, NJ 079601376039529
- Mary Shields, M.D.Loveladies, NJ 080081760803456
- Paul Berlin, M.D.Turnersville, NJ 080121346244282
- Vima Patel, M.D.Turnersville, NJ 080121144765074
Common questions
What is Gary C. Pien, MD, PHD's NPI number?
Gary C. Pien, MD, PHD's National Provider Identifier (NPI) is 1841404530, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gary C. Pien, MD, PHD located?
The NPPES record lists a practice address at 1 Diamond Hill RD, Berkeley Heights, NJ, 07922. Phone: (908) 273-4300. Providers update this record themselves, so call before visiting.
How can I verify Gary C. Pien, MD, PHD's license?
NPPES lists New Jersey license number 25MA08470800, 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 Gary C. Pien, MD, PHD prescribe under Medicare Part D?
In 2024, Gary C. Pien, MD, PHD had 330 Medicare Part D claims for 79 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.