HELEN JANE BLACKMAN M.D.
NPI 1891814315
Ophthalmology in Chevy Chase, MD

NPI Status: Active since March 28, 2007

Contact Information

5530 WISCONSIN AVE
SUITE 1527
CHEVY CHASE, MD
ZIP 20815
Phone: (301) 657-5484
Fax: (301) 657-3284

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  • Individual
  • Female
  • Ophthalmology

About HELEN BLACKMAN

This page provides the complete NPI Profile along with additional information for Helen Blackman, a provider established in Chevy Chase, Maryland with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1891814315 assigned on March 2007. The practitioner's primary taxonomy code is 207W00000X with license number D0050462 (MD). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1891814315
Provider Name
HELEN JANE BLACKMAN M.D.
Gender
Female
Entity Type
Individual
Location Address
5530 WISCONSIN AVE SUITE 1527 CHEVY CHASE, MD 20815
Location Phone
(301) 657-5484
Location Fax
(301) 657-3284
Mailing Address
5530 WISCONSIN AVE SUITE 1527 CHEVY CHASE, MD 20815
Mailing Phone
(301) 657-5484
Mailing Fax
(301) 657-3284
Is Sole Proprietor?
No
Enumeration Date
03-28-2007
Last Update Date
07-08-2007
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Ophthalmologists like Helen Blackman specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
D0050462
License State
MD
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
B94664MEDICARE UPIN (02)MD 

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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 1891814315, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 1 + 6 + 1 + 8 + 3 + 2 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1891814315.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Dentist (Periodontics)
5530 WISCONSIN AVE, STE 1110
CHEVY CHASE, MD 20815
Nurse Anesthetist, Certified Registered
5530 WISCONSIN AVE, STE 1550
CHEVY CHASE, MD 20815
Specialist
5530 WISCONSIN AVE, #1510
CHEVY CHASE, MD 20815
Physical Therapist
5530 WISCONSIN AVE, SUITE 604
CHEVY CHASE, MD 20815
Internal Medicine
5530 WISCONSIN AVE, SUITE 550
CHEVY CHASE, MD 20815
Dentist (General Practice)
5530 WISCONSIN AVE, STE 1535
CHEVY CHASE, MD 20815
Specialist
5530 WISCONSIN AVE, SUITE # 1660
CHEVY CHASE, MD 20815
Anesthesiology
5530 WISCONSIN AVE, SUITE 1620
CHEVY CHASE, MD 20815
Nurse Anesthetist, Certified Registered
5530 WISCONSIN AVE, SUITE 1620
CHEVY CHASE, MD 20815
Internal Medicine (Pulmonary Disease)
5530 WISCONSIN AVE, SUITE 309
CHEVY CHASE, MD 20815
Internal Medicine (Pulmonary Disease)
5530 WISCONSIN AVE, SUITE 930
CHEVY CHASE, MD 20815
Nurse Anesthetist, Certified Registered
5530 WISCONSIN AVE, SUITE 1455
CHEVY CHASE, MD 20815
Orthopaedic Surgery
5530 WISCONSIN AVE, SUITE 645
CHEVY CHASE, MD 20815
Internal Medicine (Cardiovascular Disease)
5530 WISCONSIN AVE, SUITE 700
CHEVY CHASE, MD 20815
Internal Medicine (Cardiovascular Disease)
5530 WISCONSIN AVE, SUITE 730
CHEVY CHASE, MD 20815
Internal Medicine (Cardiovascular Disease)
5530 WISCONSIN AVE, SUITE 750
CHEVY CHASE, MD 20815
Obstetrics & Gynecology
5530 WISCONSIN AVE, 715
CHEVY CHASE, MD 20815
Psychiatry & Neurology (Psychiatry)
5530 WISCONSIN AVE, #852
CHEVY CHASE, MD 20815
Neurological Surgery
5530 WISCONSIN AVE, SUITE 1147
CHEVY CHASE, MD 20815
Nurse Anesthetist, Certified Registered
5530 WISCONSIN AVE, SUITE 1620
CHEVY CHASE, MD 20815

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1891814315, enumerated as an "individual" on March 28, 2007.

The provider is located at 5530 WISCONSIN AVE SUITE 1527 CHEVY CHASE, MD 20815 and the phone number is (301) 657-5484.

Ophthalmology with taxonomy code 207W00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.