DR. JOHN H DOKKO DO
NPI 1003804550
Internal Medicine - Nephrology in Berkeley Heights, NJ

Q: What is John Dokko's NPI number?

The NPI number for John Dokko is 1003804550. It was assigned to this individual provider in the NPPES registry on October 10, 2005.

Q: What is John Dokko's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for John Dokko was last updated on February 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.

Active since October 10, 2005PECOS EnrolledAccepts Medicare Assignment

1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP, BERKELEY HEIGHTS, NJ 07922(908) 273-4300(908) 277-8808 Get Directions Write a Review

NPPES record last updated: February 16, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. John H Dokko Do NPPES

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

DR. JOHN H DOKKO DO (NPI 1003804550) is an individual nephrology provider in Berkeley Heights, New Jersey, licensed in New Jersey (25MB07449300) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Overlook Medical Center, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (1993).

NPPES Registry Identity

NPI1003804550

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. JOHN H DOKKOCredential: DO

Location Address1 DIAMOND HILL RD, SUMMIT MEDICAL GROUPBerkeley Heights, NJ 07922-2104

Mailing Address1 Diamond Hill Rd, Summit Medical GroupBerkeley Heights, NJ 07922-2104 · (908) 273-4300 · Fax (908) 277-8808

Phone(908) 273-4300

Fax(908) 277-8808

Sole ProprietorNo

Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 1993

Enumeration DateOctober 10, 2005

Last NPPES UpdateFebruary 16, 2026

NPPES CertifiedFebruary 16, 2026

✔ NPI 1003804550 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in NJ · 25MB07449300

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License 25MB07449300 (NJ)

1 DIAMOND HILL RD, Berkeley Heights, NJ 07922

Open in Google Maps ↗

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John H Dokko Do 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 ID9638100191

PECOS Enrollment IDI20050830000836

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.

Medicare Billing Reassignment

Medicare enrollment records show John Dokko reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Summit Medical Group PA

0.5 mi

Multi-Specialty

1 DIAMOND HILL RD, SUMMIT MEDICAL GROUP
Berkeley Heights, NJ 07922

Reassigned Medicare billing, New Jersey enrollment
1,184 clinicians in this Medicare group

NPI 1942254347 (908) 273-4300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 32

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

414 services217 patients

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.

248 services89 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

213 services131 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

161 services118 patients

Creatinine level to test for kidney function or muscle injury 82570

A creatinine level test measures the amount of creatinine in your blood. This substance is a waste product from normal muscle use. Higher levels can indicate possible kidney dysfunction or muscle injury. This test helps monitor kidney health.

142 services109 patients

Urine microalbumin (protein) level 82043

The urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.

125 services97 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

106 services82 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

76 services63 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

54 services33 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.

52 services52 patients

Phosphate level 84100

A phosphate level test measures the amount of phosphate in your blood. Phosphate is a chemical that contains the mineral phosphorus, crucial for energy production, muscle and nerve function, and bone growth. Imbalances may indicate kidney disease or other health issues.

43 services31 patients

Parathormone (parathyroid hormone) level 83970

The Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.

42 services38 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

42 services42 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.

40 services39 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

38 services37 patients

Gammaglobulin (immune system protein) measurement 82784

Gammaglobulin measurement is a blood test that checks the levels of certain proteins (gammaglobulins) that the body uses to fight infections. High or low levels can indicate various health conditions. It's a simple, quick procedure with minimal discomfort.

36 services12 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.

31 services31 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

30 services16 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

26 services26 patients

Hemodialysis procedure with physician evaluation 90935

Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.

26 services21 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

25 services24 patients

Blood test, basic group of blood chemicals (calcium, total) 80048

A basic group blood test measures the levels of certain chemicals in your blood, including calcium. This helps assess your overall health and detect potential problems. The procedure involves drawing a small amount of blood from your arm, which is then analyzed in a lab.

24 services21 patients

Measurement of immunoglobulin light chains 83521

Measurement of immunoglobulin light chains is a blood test that helps to detect and monitor certain disorders related to your immune system. It measures the levels of specific proteins, known as light chains, produced by your immune cells.

21 services12 patients

Total protein level, urine 84156

The Total Protein Level in urine test measures the amount of protein present in your urine. This helps to check kidney health as high levels may indicate a problem. It's a simple, non-invasive procedure involving a urine sample.

20 services19 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

19 services14 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

19 services17 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

19 services19 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

19 services19 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

18 services18 patients

Cystatin c (enzyme inhibitor) level 82610

Cystatin C level is a blood test used to assess kidney function. It measures the amount of a protein, Cystatin C, that is filtered by your kidneys. High levels may indicate that your kidneys are not functioning properly.

18 services16 patients

Protein measurement, serum 84165

A serum protein measurement is a blood test that determines the levels of proteins in your blood. It is used to evaluate your overall health, and diagnose nutritional problems, kidney disease, liver disease, or immune disorders.

12 services12 patients

Immunologic analysis technique on serum (immunofixation) 86334

Immunofixation is a lab test that helps identify proteins called immunoglobulins in your blood serum. These proteins are part of your immune system. Changes in their levels can indicate certain diseases. The test is simple and only requires a blood sample.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

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.

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

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

MIKE HOLCHENDLER

Physician Assistant

1 DIAMOND HILL RD
BERKELEY HEIGHTS, NJ 07922

Union County (855) 624-8963

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 John Dokko's NPI number?

The NPI number for John Dokko is 1003804550. It was assigned to this individual provider in the NPPES registry on October 10, 2005.

Where is John Dokko located?

John Dokko practices at 1 Diamond Hill Rd Summit Medical Group, Berkeley Heights, NJ 07922. The listed phone number is (908) 273-4300.

What is John Dokko's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is John Dokko enrolled in Medicare?

Yes. John Dokko 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.

Which organization bills Medicare for John Dokko's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Dokko reassigns Medicare benefits to Summit Medical Group PA (Berkeley Heights, NJ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Dokko's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Dokko accept?

Health plans from Oscar Health list John Dokko 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 John Dokko affiliated with any hospitals?

According to CMS data, John Dokko is affiliated with Overlook Medical Center.

When was this NPI record last updated?

The NPPES record for John Dokko was last updated on February 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.