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GREGORY JOHN DIEHL MD
NPI 1447249214
Plastic Surgery in Port Jefferson Station, NY

Active since October 14, 2005PECOS Enrolled
1500 ROUTE 112 BLDG # 10, PORT JEFFERSON STATION, NY 11776(631) 476-7300(631) 476-7304 Get Directions Write a Review

NPPES record last updated: May 20, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 20, 2020, Feb 4, 2020 (2 updates tracked since 2020).

About Gregory John Diehl Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY JOHN DIEHL MD (NPI 1447249214) is an individual plastic surgery provider in Port Jefferson Station, New York, licensed in New York (1902162) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447249214
Entity TypeIndividualMale
Primary Taxonomy208200000X
Provider Legal NameGREGORY JOHN DIEHLCredential: MD
Location Address1500 ROUTE 112 BLDG # 10Port Jefferson Station, NY 11776
Mailing Address1500 Route 112, Bldg 10Port Jefferson Station, NY 11776-3184 · (631) 476-7300 · Fax (631) 476-7304
Phone(631) 476-7300
Fax(631) 476-7304
Sole ProprietorYes
Enumeration DateOctober 14, 2005
Last NPPES UpdateMay 20, 20202 updates tracked since enumeration
NPPES CertifiedMay 20, 2020
✔ NPI 1447249214 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPlastic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208200000X
License✔ Licensed in NY · 1902162
Definition
A plastic surgeon deals with the repair, reconstruction or replacement of physical defects of form or function involving the skin, musculoskeletal system, craniomaxillofacial structures, hand, extremities, breast and trunk and external genitalia or cosmetic enhancement of these areas of the body. Cosmetic surgery is an essential component of plastic surgery. The plastic surgeon uses cosmetic surgical principles to both improve overall appearance and to optimize the outcome of reconstructive procedures. The surgeon uses aesthetic surgical principles not only to improve undesirable qualities of normal structures but in all reconstructive procedures as well.
Also ListedPlastic Surgery · Surgery of the HandTaxonomy 2082S0105X · License 1902162 (NY)
1500 ROUTE 112 BLDG # 10, Port Jefferson Station, NY 11776
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory John Diehl Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11776 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
68%1,568 patients1/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
100%406 patients5/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period
56%261 patients3/55-star benchmark: 99%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…
29%670 patients2/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
34%261 patients2/55-star benchmark: 90%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
15%189 patients1/55-star benchmark: 88%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 86% · 284 patients
Patients tobacco: 80% · 284 patients
38%26 patients2/55-star benchmark: 98%
Provide Patient Access
For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…
17%670 patients1/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…
0%670 patients1/55-star benchmark: 75%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 261 patients
0%261 patients5/55-star benchmark: 100%
View, Download and Transmit (VDT)
During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.
2%670 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Diehl's NPI number?

The NPI number for Gregory Diehl is 1447249214. It was assigned to this individual provider in the NPPES registry on October 14, 2005.

Where is Gregory Diehl located?

Gregory Diehl practices at 1500 Route 112 Bldg # 10, Port Jefferson Station, NY 11776. The listed phone number is (631) 476-7300.

What is Gregory Diehl's specialty?

The primary specialty registered for this NPI is Plastic Surgery with taxonomy code 208200000X.

Is Gregory Diehl enrolled in Medicare?

Yes. Gregory Diehl is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Diehl was last updated on May 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.