DR. JOHN V. CHANG D.O.
NPI 1679557326
Emergency Medicine in Lawrence, MA
NPI Status: Active since December 05, 2005
Contact Information
34 HAVERHILL ST
LAWRENCE, MA
ZIP 01841
Phone: (978) 686-0090
Fax: (978) 681-5963
- Individual
- Male
- Years of Experience 42
- Emergency Medicine
- Accepts Insurance
- Accepts Medicare Approved Payment
- PECOS Enrolled
About JOHN CHANG
This page provides the complete NPI Profile along with additional information for John Chang, a provider established in Lawrence, Massachusetts with a medical specialization in Emergency Medicine and more than 42 years of experience. He graduated from University Of New England, College Of Osteo Medicine in 1984. The healthcare provider is registered in the NPI registry with number 1679557326 assigned on December 2005. The practitioner's primary taxonomy code is 207P00000X with license number 56184 (MA). The provider is registered as an individual and his NPI record was last updated 5 years ago.
- NPI
- 1679557326
- Provider Name
- DR. JOHN V. CHANG D.O.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 34 HAVERHILL ST LAWRENCE, MA 01841
- Location Phone
- (978) 686-0090
- Location Fax
- (978) 681-5963
- Mailing Address
- 1 CASTLE DR WILMINGTON, MA 01887
- Mailing Phone
- (978) 302-7300
- Medical School Name
- UNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE
- Graduation Year
- 1984
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-05-2005
- Last Update Date
- 09-25-2020
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Emergency Medicine
- Taxonomy Code
- 207P00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 56184
- License State
- MA
- Taxonomy Description
- An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | 56184 (MA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Preferred Blue PPO 5000/10%/8000 w/HSA - PPO
- Anthem Bronze Preferred Blue PPO 5000/20%/8000 w/HSA - PPO
- Anthem Bronze Preferred Blue PPO 6500/30%/9200 Value - PPO
- Anthem Bronze Preferred Blue PPO 7000/50%/8000 w/HSA - PPO
- Anthem Bronze Preferred Blue PPO 8500/50%/9200 - PPO
- Anthem Gold Preferred Blue PPO 1000/20%/7500 - PPO
- Anthem Gold Preferred Blue PPO 2000/0%/6500 RxD - PPO
- Anthem Gold Preferred Blue PPO 2000/10%/4600 w/HSA - PPO
- Anthem Gold Preferred Blue PPO 2000/10%/7500 - PPO
- Anthem Gold Preferred Blue PPO 2000/20%/4600 w/HSA - PPO
- Anthem Gold Preferred Blue PPO 3000/0%/5500 RxD - PPO
- Anthem Gold Preferred Blue PPO 500/25%/7000 - PPO
- Anthem Platinum Preferred Blue PPO 250/10%/3500 - PPO
- Anthem Silver Preferred Blue PPO 2000/30%/9000 Value - PPO
- Anthem Silver Preferred Blue PPO 3000/20%/8500 - PPO
- Anthem Silver Preferred Blue PPO 3000/30%/9000 Value - PPO
- Anthem Silver Preferred Blue PPO 3500/20%/7250 w/HSA - PPO
- Anthem Silver Preferred Blue PPO 4000/0%/8500 - PPO
- Anthem Silver Preferred Blue PPO 4000/0%/8500 RxD - PPO
- Anthem Silver Preferred Blue PPO 4000/10%/7250 w/HSA - PPO
- Anthem Bronze Pathway X Enhanced 6000/35% HSA - HMO
- Anthem Bronze Pathway X Enhanced 6500/40% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Pathway X Enhanced 7500/50% ($0 Virtual PCP + $0 Select Drugs) Standard - HMO
- Anthem Catastrophic Pathway X Enhanced 9200/0% - HMO
- Anthem Gold Pathway X Enhanced 1200/20% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Gold Pathway X Enhanced 1500/25% ($0 Virtual PCP + $0 Select Drugs) Standard - HMO
- Anthem Gold Pathway X Enhanced 700/40% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Heart Healthy Bronze Pathway X Enhanced 6000/30% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Heart Healthy Silver Pathway X Enhanced 4000/0% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Silver Pathway X Enhanced 4500/20% HSA - HMO
- Anthem Silver Pathway X Enhanced 5000/40% ($0 Virtual PCP + $0 Select Drugs) Standard - HMO
- Anthem Silver Pathway X Enhanced 5500/20% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Access Blue New England HMO 5000/10%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 5000/20%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 6500/30%/9200 Value - HMO
- Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 8500/50%/9200 - HMO
- Anthem Bronze Pathway X HMO 5000/10%/8000 w/HSA - HMO
- Anthem Bronze Pathway X HMO 5000/20%/8000 w/HSA - HMO
- Anthem Bronze Pathway X HMO 6500/30%/9200 Value - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
John Chang is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
John Chang is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 6002863842
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20060119000638
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Physician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $22.67 for a new patient copayment and $25.87 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 01841 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $90.7
- Minimum New Patient Price $58.86
- Maximum New Patient Price $177.36
- Average New Patient Copayment $22.67
- Minimum New Patient Copayment $14.71
- Maximum New Patient Copayment $44.34
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $103.48
- Minimum Established Patient Price $19.11
- Maximum Established Patient Price $144.84
- Average Established Patient Copayment $25.87
- Minimum Established Patient Copayment $4.77
- Maximum Established Patient Copayment $36.21
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. John Chang is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| LAWRENCE GENERAL HOSPITAL | ONE GENERAL STREET LAWRENCE, MA 01842 | (978) 683-4000 | Acute Care Hospitals |
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 6 | 7 | 9 | 5 | 5 | 7 | 3 | 2 | 6 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 14 | 9 | 10 | 5 | 14 | 3 | 4 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 1 + 4 + 9 + 1 + 0 + 5 + 1 + 4 + 3 + 4 + 24 = 64 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 64 = 6 | 6 | ||||||||
The NPI number 1679557326 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1093717977 | DR. SHARDUL S PATEL PHARM.D., R.PH. Individual | Pharmacist | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 806-0024 |
| 1235111576 | TRINIDAD L TELLEZ MD Individual | Family Medicine | 34 HAVERHILL ST GREATER LAWRENCE FAMILY HEALTH CENTER INC LAWRENCE, MA 01841 (978) 686-0090 |
| 1295710630 | LEON FAY MD Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1124092929 | DR. PHI VAN TRAN MD Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1245373539 | PATRICIA A DOYLE NP Individual | Nurse Practitioner (Family) | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1801922638 | BRIAN SCOTT ANDERSON M.D. Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE FAMILY MEDICINE RESIDENCY LAWRENCE, MA 01841 (978) 686-0090 |
| 1720103922 | MRS. STACEY LYNN ROBERT RPH Individual | Pharmacist | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 688-1567 |
| 1265648448 | DR. AMBER LAMBERT MD Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1225244312 | DR. ABIGAIL RATTIN Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1558579367 | KRISTINE LYNNE SHEEHAN RPH Individual | Pharmacist | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 688-1567 |
| 1740499219 | JOYCE ANN POULIN RPH Individual | Pharmacist | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 688-1567 |
| 1396906061 | LARKIN HOLT M.D. Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 689-6683 |
| 1366429268 | MRS. JOAN QUINN RD, LDN Individual | Nutritionist (Nutrition, Education) | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1538386230 | PRUDENCE BARKER NP Individual | Nurse Practitioner | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1447416854 | CARLOS FRANCISCO CAPPAS PSYD Individual | Psychologist (Counseling) | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1558671339 | MRS. MARIA J PARHAM RD, LDN, CDE Individual | Dietitian, Registered | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1457613887 | KATRINA SAULRIETA BAUMGARTNER MD Individual | Family Medicine | 34 HAVERHILL ST 3RD FLOOR RESIDENCY LAWRENCE, MA 01841 (978) 686-0090 |
| 1144582552 | CIARAN A DELLAFERA MD Individual | Family Medicine | 34 HAVERHILL ST 3RD FLOOR RESIDENCY LAWRENCE, MA 01841 (978) 686-0090 |
| 1578902300 | ERIN BASSETT MD Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
| 1801855788 | GEOFFREY ALAN PECHINSKY MD Individual | Family Medicine | 34 HAVERHILL ST LAWRENCE, MA 01841 (978) 686-0090 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1679557326, enumerated in the NPI registry as an "individual" on December 05, 2005
The provider is located at 34 Haverhill St Lawrence, Ma 01841 and the phone number is (978) 686-0090
The provider's speciality is Emergency Medicine with taxonomy code 207P00000X
The provider has more than 42 years of experience. He graduated from University Of New England, College Of Osteo Medicine in 1984.
The provider might be accepting Accepts: Anthem Blue Cross and Blue Sheld and Anthem Blue. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
Medicare beneficiaries should expect a typical cost of $90.7 with an average copayment of $22.67 for new patient appointments. Established patients should expect a typical charge of $103.48 and an average copayment of 25.87. Please review your insurance plan or contact the provider directly to determine your specific costs.
The practitioner is affiliated to the following hospital(s): LAWRENCE GENERAL HOSPITAL. Hospital affiliations are identified through self-reporting data and service claims based on the place of service.
This NPI record was last updated on December 05, 2005. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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