MOHAMED ASHRAF AHMED ELMASRY MD, PHD
NPI 1982126769
Ophthalmology - Retina Specialist in Boston, MA

NPI Status: Active since July 12, 2017

Contact Information

1 JOSLIN PL
BOSTON, MA
ZIP 02215
Phone: (617) 309-2586

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  • Individual
  • Male
  • Years of Experience 18
  • Ophthalmology
  • Retina Specialist
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About MOHAMED ELMASRY

This page provides the complete NPI Profile along with additional information for Mohamed Elmasry, a provider established in Boston, Massachusetts with a medical specialization in Ophthalmology, focusing in retina specialist and more than 18 years of experience. The healthcare provider is registered in the NPI registry with number 1982126769 assigned on July 2017. The practitioner's primary taxonomy code is 207WX0107X with license number 283784 (MA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1982126769
Provider Name
MOHAMED ASHRAF AHMED ELMASRY MD, PHD
Gender
Male
Entity Type
Individual
Location Address
1 JOSLIN PL BOSTON, MA 02215
Location Phone
(617) 309-2586
Mailing Address
526 FARNSWORTH ST PITTSBURGH, PA 15207
Mailing Phone
(617) 685-1746
Medical School Name
OTHER
Graduation Year
2008
Is Sole Proprietor?
No
Enumeration Date
07-12-2017
Last Update Date
07-11-2025
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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 Retina Specialist

Taxonomy Code
207WX0107X
Type
Allopathic & Osteopathic Physicians
License No.
283784
License State
MA
Taxonomy Description
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.

Medicare Participation & PECOS Enrollment Status

Mohamed Elmasry 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.

Mohamed Elmasry 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: 9032526645

    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: I20210326001904, I20250711002270

    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

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Cataract surgery

Cataract surgery is a procedure to remove the lens of your eye when it becomes cloudy, which is called a cataract. A synthetic lens is then inserted to restore clear vision. The operation is typically done on an outpatient basis and is very safe and effective.

This service was performed for 1-10 patients

Established patient complete exam of visual system

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

This service was performed 82 times for 82 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 17 times for 17 patients

Established patient problem focused exam of visual system

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

This service was performed 135 times for 98 patients

Imaging of retina

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

This service was performed 352 times for 77 patients

Injection of drug into eye

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

This service was performed 152 times for 60 patients

Injection, aflibercept, 1 mg

Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.

This service was performed 262 times for 44 patients

New patient complete exam of visual system

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

This service was performed 34 times for 34 patients

Photography of the retina

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

This service was performed 149 times for 108 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $36.02 for a new patient copayment and $19.71 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 02215 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $144.11
  • Minimum New Patient Price $63.72
  • Maximum New Patient Price $189.86
  • Average New Patient Copayment $36.02
  • Minimum New Patient Copayment $15.93
  • Maximum New Patient Copayment $47.46

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $78.84
  • Minimum Established Patient Price $21.07
  • Maximum Established Patient Price $155.29
  • Average Established Patient Copayment $19.71
  • Minimum Established Patient Copayment $5.26
  • Maximum Established Patient Copayment $38.82

* 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.

Reviews for MOHAMED ASHRAF AHMED ELMASRY MD, PHD

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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 1982126769, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
8
Doubled → 16 → 1 + 6
Pos 4
2
Unchanged
Pos 5
1
Doubled → 2
Pos 6
2
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 8 → 16 → 7 1 → 2 6 → 12 → 3 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 6 + 2 + 2 + 2 + 1 + 2 + 7 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1982126769.

Other Providers at the Same Location


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

Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, ROOM 470
BOSTON, MA 02215
Dietitian, Registered
1 JOSLIN PL
BOSTON, MA 02215
Psychologist (Counseling)
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, THE JOSLIN CLINIC
BOSTON, MA 02215
Internal Medicine (Nephrology)
1 JOSLIN PL, RENAL SECTION, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Internal Medicine
1 JOSLIN PL
BOSTON, MA 02215
Pediatrics (Pediatric Endocrinology)
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL
BOSTON, MA 02215
Ophthalmology
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Nephrology)
1 JOSLIN PL
BOSTON, MA 02215
Social Worker (Clinical)
1 JOSLIN PL, ROOM 360
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL
BOSTON, MA 02215
Optometrist
1 JOSLIN PL, BEETHAM EYE INSTITUTE, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Optometrist
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Nephrology)
1 JOSLIN PL
BOSTON, MA 02215

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1982126769, enumerated as an "individual" on July 12, 2017.

The provider is located at 1 JOSLIN PL BOSTON, MA 02215 and the phone number is (617) 309-2586.

Ophthalmology with taxonomy code 207WX0107X and a focus in Retina Specialist.