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DIANA CHAN M.D.
NPI 1235399288
Internal Medicine in Berkeley Heights, NJ

Active since June 12, 2008PECOS EnrolledAccepts Medicare Assignment
1 DIAMOND HILL RD, BERKELEY HEIGHTS, NJ 07922(908) 273-4300 Get Directions Write a Review

NPPES record last updated: September 23, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Diana Chan M.d. NPPES

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

DIANA CHAN M.D. (NPI 1235399288) is an individual internal medicine provider in Berkeley Heights, New Jersey, licensed in New Jersey (25MA08988900) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Morristown Medical Center, and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (2008).

NPPES Registry Identity

NPI1235399288
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDIANA CHANCredential: M.D.
Location Address1 DIAMOND HILL RDBerkeley Heights, NJ 07922-2104
Mailing Address1 Diamond Hill RdBerkeley Heights, NJ 07922-2104 · (908) 273-4300
Phone(908) 273-4300
Sole ProprietorYes
Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 2008
Enumeration DateJune 12, 2008
Last NPPES UpdateSeptember 23, 2011
✔ NPI 1235399288 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NJ · 25MA08988900
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1 DIAMOND HILL RD, Berkeley Heights, NJ 07922
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Chan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436323623
PECOS Enrollment IDI20111128000724
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.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
202 services111 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
78 services77 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
46 services45 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
26 services26 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
26 services26 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
19 services19 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Morristown Medical Center

Acute Care Hospitals · Morristown, NJ
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310015
Location100 Madison AveMorristown, NJ 07960 · Morris County
Emergency services Birthing friendly

Overlook Medical Center

Acute Care Hospitals · Summit, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310051
Location99 Beauvoir AvenueSummit, NJ 07901 · Union County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07922 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
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier11 claims11 services$11.26 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$50.07 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SILPA GADIRAJU M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 DIAMOND HILL RD
BERKELEY HEIGHTS, NJ 07922
Union County (908) 273-4300
DR. JOHN H DOKKO DO
Internal Medicine (Nephrology)
1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP
BERKELEY HEIGHTS, NJ 07922
Union County (908) 273-4300
DENISE RIZZOLO PA
Physician Assistant
1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP
BERKELEY HEIGHTS, NJ 07922
Union County (908) 273-4300
MARIA F DOMINGUEZ BERMEO MD
Family Medicine
1 DIAMOND HILL RD
BERKELEY HEIGHTS, NJ 07922
Union County (908) 219-6940
DR. LAWRENCE J NASTRO MD
Internal Medicine (Infectious Disease)
1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP
BERKELEY HEIGHTS, NJ 07922
Union County (908) 273-4300
DEBRA A RYAN PT
Physical Therapist
1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP
BERKELEY HEIGHTS, NJ 07922
Union County (908) 273-4300
CHRISTOPHER M BONI DO
Internal Medicine
1 DIAMOND HILL RD
BERKELEY HEIGHTS, NJ 07922
Union County (908) 277-8683
LAUREN BARON P.A.
Physician Assistant (Medical)
1 DIAMOND HILL RD
BERKELEY HEIGHTS, NJ 07922
Union County (908) 277-8880

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 Diana Chan's NPI number?

The NPI number for Diana Chan is 1235399288. It was assigned to this individual provider in the NPPES registry on June 12, 2008.

Where is Diana Chan located?

Diana Chan practices at 1 Diamond Hill Rd, Berkeley Heights, NJ 07922. The listed phone number is (908) 273-4300.

What is Diana Chan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Diana Chan enrolled in Medicare?

Yes. Diana Chan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Diana Chan accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Diana Chan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Diana Chan affiliated with any hospitals?

According to CMS data, Diana Chan is affiliated with Morristown Medical Center and Overlook Medical Center.

When was this NPI record last updated?

The NPPES record for Diana Chan was last updated on September 23, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.