HILLIS LYNN WARREN M.D.
NPI 1801999602
Specialist in Sacramento, CA

NPI Status: Active since September 07, 2006

Contact Information

2620 HURLEY WAY
STE A
SACRAMENTO, CA
ZIP 95864
Phone: (916) 929-1838
Fax: (916) 929-1753

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  • Individual
  • Male
  • Specialist
  • PECOS Enrolled

About HILLIS WARREN

This page provides the complete NPI Profile along with additional information for Hillis Warren, a provider established in Sacramento, California with a medical specialization in Specialist. The healthcare provider is registered in the NPI registry with number 1801999602 assigned on September 2006. The practitioner's primary taxonomy code is 174400000X with license number G030438 (CA). The provider is registered as an individual and his NPI record was last updated 9 years ago.

NPI
1801999602
Provider Name
HILLIS LYNN WARREN M.D.
Gender
Male
Entity Type
Individual
Location Address
2620 HURLEY WAY STE A SACRAMENTO, CA 95864
Location Phone
(916) 929-1838
Location Fax
(916) 929-1753
Mailing Address
2620 HURLEY WAY STE A SACRAMENTO, CA 95864
Mailing Phone
(916) 453-1111
Mailing Fax
(916) 929-1753
Is Sole Proprietor?
Yes
Enumeration Date
09-07-2006
Last Update Date
09-11-2017
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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

Specialist

Taxonomy Code
174400000X
Type
Other Service Providers
License No.
G030438
License State
CA
Taxonomy Description
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

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
A44425MEDICARE UPIN (02) 
00G304380MEDICAID (05)CA 
00G304380MEDICARE ID-TYPE UNSPECIFIED (04) 

Medicare Participation & PECOS Enrollment Status

Hillis Warren 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

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.

Destruction of eye fluid (vitreous) between lens and retina and all of retina using a laser

This procedure involves using a laser to eliminate the fluid (vitreous) between your lens and retina, along with the entire retina. It's a method often used to treat various eye conditions and improve eye health.

This service was performed 20 times for 20 patients

Removal of eye fluid (vitreous) between lens and retina

This procedure, known as a vitrectomy, involves removing some or all of the vitreous humor, the clear gel-like substance in the eye. It's done to treat various eye conditions, like retinal detachment or macular hole. The aim is to improve or stabilize vision. It's performed under local or general anesthesia.

This service was performed 37 times for 36 patients

Removal of membrane of retina

Removal of the retina's membrane is a surgical procedure aimed at treating eye conditions affecting the retina's function. It involves a delicate operation to eliminate scar tissue or membranes causing vision problems. The procedure can help improve or stabilize vision.

This service was performed 25 times for 24 patients

Removal of membrane of retina with removal of internal limiting membrane of retina

This procedure involves the surgical removal of a thin layer, called the membrane, from the retina. It also includes the removal of the innermost layer of the retina, known as the internal limiting membrane. This can help improve vision.

This service was performed 18 times for 17 patients

Repair of detached retina with drainage and removal of eye fluid between lens and retina

This procedure addresses a detached retina, a serious eye condition. It involves draining fluid from between the lens and retina, allowing the retina to reattach. Then, the eye fluid is removed to prevent future detachments. It's a crucial step for vision restoration.

This service was performed 40 times for 36 patients

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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 1801999602, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

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
0
Doubled → 0
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
6
Unchanged
Pos 9
0
Doubled → 0
Check
2
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 0 → 0 9 → 18 → 9 9 → 18 → 9 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 1 + 8 + 9 + 1 + 8 + 6 + 0 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1801999602.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Optometrist
2620 HURLEY WAY, SUITE A
SACRAMENTO, CA 95864
Eyewear Supplier
2620 HURLEY WAY, SUITE A
SACRAMENTO, CA 95864
Audiologist
2620 HURLEY WAY, SUITE B
SACRAMENTO, CA 95864
Optometrist
2620 HURLEY WAY, SUITE A
SACRAMENTO, CA 95864
Ophthalmology
2620 HURLEY WAY, SUITE A
SACRAMENTO, CA 95864
Optometrist
2620 HURLEY WAY
SACRAMENTO, CA 95864
Ophthalmology
2620 HURLEY WAY, SUITE A
SACRAMENTO, CA 95864

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801999602, enumerated as an "individual" on September 07, 2006.

The provider is located at 2620 HURLEY WAY STE A SACRAMENTO, CA 95864 and the phone number is (916) 929-1838.

Specialist with taxonomy code 174400000X.

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