SYDNEY LARKIN PROFFER MD, MS
NPI 1588283253
Dermatology - MOHS-Micrographic Surgery in Austin, TX

NPI Status: Active since April 13, 2020

Contact Information

4516 SETON CENTER PKWY
STE 150
AUSTIN, TX
ZIP 78759
Phone: (512) 535-6000
Fax: (512) 610-0262

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  • Individual
  • Female
  • Years of Experience 7
  • Dermatology
  • MOHS-Micrographic Surgery
  • Accepts Insurance
  • May Accept Medicare Approved Payment
  • PECOS Enrolled

About SYDNEY PROFFER

This page provides the complete NPI Profile along with additional information for Sydney Proffer, a provider established in Austin, Texas with a medical specialization in Dermatology, focusing in mohs-micrographic surgery and more than 7 years of experience. She graduated from Mayo Medical School in 2020. The healthcare provider is registered in the NPI registry with number 1588283253 assigned on April 2020. The practitioner's primary taxonomy code is 207ND0101X with license number U3625 (TX). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1588283253
Provider Name
SYDNEY LARKIN PROFFER MD, MS
Other Name
SYDNEY CONRAD LARKIN
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
4516 SETON CENTER PKWY STE 150 AUSTIN, TX 78759
Location Phone
(512) 535-6000
Location Fax
(512) 610-0262
Mailing Address
4516 SETON CENTER PKWY STE 150 AUSTIN, TX 78759
Mailing Phone
(512) 535-6000
Mailing Fax
(512) 610-0262
Medical School Name
MAYO MEDICAL SCHOOL
Graduation Year
2020
Is Sole Proprietor?
No
Enumeration Date
04-13-2020
Last Update Date
06-17-2025
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Location Map

Secondary Locations

  • 259 E Erie St Ste 2020
    Chicago, IL 60611
    (312) 926-2000

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

Dermatology MOHS-Micrographic Surgery

Taxonomy Code
207ND0101X
Type
Allopathic & Osteopathic Physicians
License No.
U3625
License State
TX
Taxonomy Description
The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.

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)
1207N00000XAllopathic & Osteopathic Physicians

Dermatology

68967 (MN)
2207N00000XAllopathic & Osteopathic Physicians

Dermatology

036.168455 (IL)

Insurance Plans Accepted

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

  • Blue Advantage Bronze HMO? 204 - HMO
  • Blue Advantage Bronze HMO? 301 - HMO
  • Blue Advantage Bronze HMO? Standard - HMO
  • Blue Advantage Gold HMO? 206 - HMO
  • Blue Advantage Gold HMO? 603 - HMO
  • Blue Advantage Gold HMO? Standard - HMO
  • Blue Advantage Plus Bronze? 303 - POS
  • Blue Advantage Plus Bronze? 305 - POS
  • Blue Advantage Plus Bronze? Standard - POS
  • Blue Advantage Plus Gold? 203 - POS
  • Blue Advantage Plus Gold? 803 - POS
  • Blue Advantage Plus Gold? Standard - POS
  • Blue Advantage Plus Silver? 202 - POS
  • Blue Advantage Plus Silver? 605 - POS
  • Blue Advantage Plus Silver? Standard - POS
  • Blue Advantage Security HMO? 200 - HMO
  • Blue Advantage Silver HMO? 205 - HMO
  • Blue Advantage Silver HMO? 801 - HMO
  • Blue Advantage Silver HMO? Standard - HMO
  • Bronze Classic 4700 - EPO
  • Bronze Classic Standard - EPO
  • Bronze Elite + PCP Saver Plus - EPO
  • Bronze Simple Breathe Easy with Enhanced COPD Benefits - EPO
  • Bronze Simple Chronic Care CKM - EPO
  • Bronze Simple Diabetes - EPO
  • Gold Classic - EPO
  • Gold Classic Guided Care - HMO
  • Gold Classic Standard - EPO
  • Gold Classic Standard Guided Care - HMO
  • Gold Elite - EPO
  • Gold Simple Diabetes Guided Care - HMO
  • Gold Simple Guided Care - HMO
  • Silver Classic - EPO
  • Silver Classic Standard - EPO
  • Silver Classic Standard Guided Care - HMO
  • Silver Simple Breathe Easy with Enhanced COPD Benefits Guided Care - HMO
  • Silver Simple Chronic Care CKM Guided Care - HMO
  • Silver Simple Diabetes Guided Care - HMO
  • Silver Simple Guided Care - HMO

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

Medicare Participation & PECOS Enrollment Status

Sydney Proffer is registered with Medicare but may not accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.

Sydney Proffer 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: 7416378625

    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: I20250930004511

    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? Maybe

    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

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 78759 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $89.03
  • Minimum New Patient Price $57.88
  • Maximum New Patient Price $174
  • Average New Patient Copayment $22.25
  • Minimum New Patient Copayment $14.47
  • Maximum New Patient Copayment $43.5

Established Patients Visit Costs *

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

  • Average Established Patient Price $71.95
  • Minimum Established Patient Price $18.88
  • Maximum Established Patient Price $142.23
  • Average Established Patient Copayment $17.98
  • Minimum Established Patient Copayment $4.72
  • Maximum Established Patient Copayment $35.55

* 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 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 1588283253, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
2
Doubled → 4
Pos 6
8
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
3
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 2 → 4 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 4 + 8 + 6 + 2 + 1 + 0 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1588283253.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Dermatology (MOHS-Micrographic Surgery)
4516 SETON CENTER PKWY, STE 150
AUSTIN, TX 78759

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588283253, enumerated as an "individual" on April 13, 2020.

The provider is located at 4516 SETON CENTER PKWY STE 150 AUSTIN, TX 78759 and the phone number is (512) 535-6000.

Dermatology with taxonomy code 207ND0101X and a focus in MOHS-Micrographic Surgery.

The provider might be accepting Accepts: Blue Cross and Blue Shield of Texas and Oscar. Please consult your insurance carrier or call the provider to verify.