ALLEN HAO ZENG MD
NPI 1538748108
Internal Medicine - Endocrinology, Diabetes & Metabolism in Valhalla, NY
NPI Status: Active since April 02, 2021
Contact Information
100 WOODS RD
VALHALLA, NY
ZIP 10595
Phone: (914) 493-7000
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Male
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
- PECOS Enrolled
About ALLEN ZENG
This page provides the complete NPI Profile along with additional information for Allen Zeng, an internist established in Valhalla, New York with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1538748108 assigned on April 2021. The practitioner's primary taxonomy code is 207RE0101X with license number 343508 (NY). The provider is registered as an individual and his NPI record was last updated June 2026.
- NPI
- 1538748108
- Provider Name
- ALLEN HAO ZENG MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 100 WOODS RD VALHALLA, NY 10595
- Location Phone
- (914) 493-7000
- Mailing Address
- 100 WOODS RD VALHALLA, NY 10595
- Mailing Phone
- (703) 509-8419
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-02-2021
- Last Update Date
- 06-17-2026
- Code Navigator
An internist like Allen Zeng 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
- 73 Market St
Yonkers, NY 10710
(914) 848-8073
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.
- 343508
- License State
- NY
- 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.
Medicare Participation & PECOS Enrollment Status
Allen Zeng 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
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 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 10595 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $154.28
- Minimum New Patient Price $67.4
- Maximum New Patient Price $203.53
- Average New Patient Copayment $38.57
- Minimum New Patient Copayment $16.85
- Maximum New Patient Copayment $50.88
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $117.62
- Minimum Established Patient Price $21.66
- Maximum Established Patient Price $164.45
- Average Established Patient Copayment $29.4
- Minimum Established Patient Copayment $5.41
- Maximum Established Patient Copayment $41.11
* 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.
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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 1538748108, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 62 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1538748108, enumerated as an "individual" on April 02, 2021.
The provider is located at 100 WOODS RD VALHALLA, NY 10595 and the phone number is (914) 493-7000.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.
