JEFFREY Y CHANG MD
NPI 1992738728
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sacramento, CA

NPI Status: Active since July 07, 2006

Contact Information

1020 29TH ST STE 270
SACRAMENTO, CA
ZIP 95816
Phone: (916) 455-3700
Fax: (916) 503-7568

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  • Individual
  • Male
  • Years of Experience 46
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About JEFFREY CHANG

This page provides the complete NPI Profile along with additional information for Jeffrey Chang, an internist established in Sacramento, California with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism and more than 46 years of experience. The healthcare provider is registered in the NPI registry with number 1992738728 assigned on July 2006. The practitioner's primary taxonomy code is 207RE0101X with license number C52373 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1992738728
Provider Name
JEFFREY Y CHANG MD
Gender
Male
Entity Type
Individual
Location Address
1020 29TH ST STE 270 SACRAMENTO, CA 95816
Location Phone
(916) 455-3700
Location Fax
(916) 503-7568
Mailing Address
PO BOX 255228 SACRAMENTO, CA 95865
Medical School Name
OTHER
Graduation Year
1980
Is Sole Proprietor?
No
Enumeration Date
07-07-2006
Last Update Date
09-11-2025
Code Navigator

An internist like Jeffrey Chang is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

  • 3308 W Chartwell Rd
    Peoria, IL 61614
    (309) 691-7640

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

Internal Medicine Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
C52373
License State
CA
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

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)
1207RE0101XAllopathic & Osteopathic Physicians

Internal Medicine
Endocrinology, Diabetes & Metabolism

036064132 (IL)

Medicare Participation & PECOS Enrollment Status

Jeffrey 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.

Jeffrey 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: 4587705157

    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: I20250926002307

    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

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE017N)

    Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)

    9 DME suppliers used 12 Medicare Claims 56 Services Paid

  • DME-Other DME (DE017N)

    Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)

    6 DME suppliers used 70 Medicare Claims 70 Services Paid

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $34.3 for a new patient copayment and $26.48 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 95816 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $137.2
  • Minimum New Patient Price $60.44
  • Maximum New Patient Price $180.85
  • Average New Patient Copayment $34.3
  • Minimum New Patient Copayment $15.11
  • Maximum New Patient Copayment $45.21

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $105.95
  • Minimum Established Patient Price $19.88
  • Maximum Established Patient Price $148.15
  • Average Established Patient Copayment $26.48
  • Minimum Established Patient Copayment $4.97
  • Maximum Established Patient Copayment $37.03

* 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.

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure Performance Number of Patients
Diabetes: Foot Exam 75% 508
The percentage of patients 18-75 years of age with diabetes (type 1 and type 2) who received a foot exam (visual inspection and sensory exam with mono filament and a pulse exam) during the measurement year
Documentation of Current Medications in the Medical Record 84% 3737
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. This list must include ALL known prescriptions, over-the-counters, herbals, and vitamin/mineral/dietary (nutritional) supplements AND must contain the medications' name, dosage, frequency and route of administration
Implementation of Use of Specialist Reports Back to Referring Clinician or Group to Close Referral LoopYesN/A
Performance of regular practices that include providing specialist reports back to the referring individual MIPS eligible clinician or group to close the referral loop or where the referring individual MIPS eligible clinician or group initiates regular inquiries to specialist for specialist reports which could be documented or noted in the EHR technology.
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan 97% 1820
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous twelve months of the current encounter Normal Parameters: Age 18 years and older BMI >= 18.5 and < 25 kg/m2
Preventive Care and Screening: Influenza Immunization 92% 850
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
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 80% 82
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
Use of certified EHR to capture patient reported outcomesYesN/A
In support of improving patient access, performing additional activities that enable capture of patient reported outcomes (e.g., home blood pressure, blood glucose logs, food diaries, at-risk health factors such as tobacco or alcohol use, etc.) or patient activation measures through use of certified EHR technology, containing this data in a separate queue for clinician recognition and review.
Use of High-Risk Medications in the Elderly 8% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
624
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. 2) Percentage of patients who were ordered at least two of the same high-risk medication

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1992738728, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
3
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
7
Unchanged
Pos 9
2
Doubled → 4
Check
8
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 9 → 18 → 9 7 → 14 → 5 8 → 16 → 7 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 1 + 8 + 2 + 1 + 4 + 3 + 1 + 6 + 7 + 4 + 24 = 72

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1992738728.

Other Providers at the Same Location


The following 6 providers are registered at the same or a nearby location.

Internal Medicine (Rheumatology)
1020 29TH ST STE 270
SACRAMENTO, CA 95816
Internal Medicine (Rheumatology)
1020 29TH ST STE 270
SACRAMENTO, CA 95816
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1020 29TH ST STE 270
SACRAMENTO, CA 95816
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1020 29TH ST STE 270
SACRAMENTO, CA 95816
Internal Medicine (Rheumatology)
1020 29TH ST STE 270
SACRAMENTO, CA 95816
Student in an Organized Health Care Education/Training Program
1020 29TH ST STE 270
SACRAMENTO, CA 95816

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992738728, enumerated as an "individual" on July 07, 2006.

The provider is located at 1020 29TH ST STE 270 SACRAMENTO, CA 95816 and the phone number is (916) 455-3700.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.