DR. GREGORY NICHOLAS MATWIYOFF M.D.
NPI 1932248093
Internal Medicine - Pulmonary Disease in San Diego, CA

NPI Status: Active since February 05, 2007

Contact Information

NAVAL MEDICAL CTR
34800 BOB WILSON DRIVE
SAN DIEGO, CA
ZIP 92134
Phone: (619) 532-5990

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  • Individual
  • Male
  • Internal Medicine
  • Pulmonary Disease
  • PECOS Enrolled

About GREGORY MATWIYOFF

This page provides the complete NPI Profile along with additional information for Gregory Matwiyoff, an internist established in San Diego, California with a medical specialization in Internal Medicine, focusing in pulmonary disease . The healthcare provider is registered in the NPI registry with number 1932248093 assigned on February 2007. The practitioner's primary taxonomy code is 207RP1001X with license number 01051784A (IN). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI
1932248093
Provider Name
DR. GREGORY NICHOLAS MATWIYOFF M.D.
Gender
Male
Entity Type
Individual
Location Address
NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE SAN DIEGO, CA 92134
Location Phone
(619) 532-5990
Mailing Address
NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE SAN DIEGO, CA 92134
Mailing Phone
(619) 532-5990
Is Sole Proprietor?
No
Enumeration Date
02-05-2007
Last Update Date
02-14-2014
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An internist like Gregory Matwiyoff 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.

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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

Internal Medicine Pulmonary Disease

Taxonomy Code
207RP1001X
Type
Allopathic & Osteopathic Physicians
License No.
01051784A
License State
IN
Taxonomy Description
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

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
VAD0000OTHER (01)DOD

Medicare Participation & PECOS Enrollment Status

Gregory Matwiyoff 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

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE001N)

    Full face mask used with positive airway pressure device, each (HCPCS:A7030)

    2 DME suppliers used 13 Medicare Claims 13 Services Paid

  • DME-Other DME (DE001N)

    Face mask interface, replacement for full face mask, each (HCPCS:A7031)

    2 DME suppliers used 12 Medicare Claims 36 Services Paid

  • DME-Other DME (DE001N)

    Cushion for use on nasal mask interface, replacement only, each (HCPCS:A7032)

    4 DME suppliers used 12 Medicare Claims 72 Services Paid

  • DME-Other DME (DE001N)

    Pillow for use on nasal cannula type interface, replacement only, pair (HCPCS:A7033)

    1 DME suppliers used 22 Medicare Claims 132 Services Paid

  • DME-Other DME (DE001N)

    Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap (HCPCS:A7034)

    4 DME suppliers used 33 Medicare Claims 33 Services Paid

  • DME-Other DME (DE001N)

    Headgear used with positive airway pressure device (HCPCS:A7035)

    4 DME suppliers used 28 Medicare Claims 28 Services Paid

  • DME-Other DME (DE001N)

    Tubing used with positive airway pressure device (HCPCS:A7037)

    4 DME suppliers used 27 Medicare Claims 27 Services Paid

  • DME-Other DME (DE001N)

    Filter, disposable, used with positive airway pressure device (HCPCS:A7038)

    4 DME suppliers used 31 Medicare Claims 186 Services Paid

  • DME-Other DME (DE001N)

    Water chamber for humidifier, used with positive airway pressure device, replacement, each (HCPCS:A7046)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

  • DME-Other DME (DE001N)

    Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) (HCPCS:E0471)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

  • DME-Other DME (DE001N)

    Continuous positive airway pressure (cpap) device (HCPCS:E0601)

    1 DME suppliers used 17 Medicare Claims 17 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)

    3 DME suppliers used 27 Medicare Claims 35 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Portable oxygen concentrator, rental (HCPCS:E1392)

    3 DME suppliers used 18 Medicare Claims 20 Services Paid

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 92134 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $140.22
  • Minimum New Patient Price $62.1
  • Maximum New Patient Price $184.71
  • Average New Patient Copayment $35.05
  • Minimum New Patient Copayment $15.52
  • Maximum New Patient Copayment $46.17

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $108.42
  • Minimum Established Patient Price $20.62
  • Maximum Established Patient Price $151.42
  • Average Established Patient Copayment $27.1
  • Minimum Established Patient Copayment $5.15
  • Maximum Established Patient Copayment $37.85

* 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 DR. GREGORY NICHOLAS MATWIYOFF M.D.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1932248093
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
29624416018
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 9 + 6 + 2 + 4 + 4 + 1 + 6 + 0 + 1 + 8 + 24 = 67
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 67 = 33

The NPI number 1932248093 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


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

NPI Name / Type Taxonomy Address
1821189499 ROBERT W GORMAN BALASCO IDC
Individual
Military Health Care Provider (Independent Duty Corpsman)NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-6666
1033366232MR. JASON WILLIAM BECKFORD
Individual
Military Health Care Provider (Independent Duty Corpsman)NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 708-2068
1275855322MS. BREANNA MARIE HAMILTON
Individual
Nurse's AideNAVAL MEDICAL CTR 34800 BOB WILSON DR.
SAN DIEGO, CA 92134
(619) 532-6400
1841583853DR. MATTHEW CAMERON RE M.D.
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 985-2210
1053698225 HOLLADAY JEAN CANTUA DPT
Individual
Physical TherapistNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-6400
1205274057 LYNN RAI BINKLEY LICSW
Individual
Social Worker (Clinical)NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-5618
1447699616UNITES STATES NAVY
Organization
Dentist (General Practice)NAVAL MEDICAL CTR 34800 BOB WILSON DR
SAN DIEGO, CA 92134
(619) 532-6471
1093138042 SHANE WORLAND IDC
Individual
Military Health Care Provider (Independent Duty Corpsman)NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(757) 375-7598
1497012447DR. ROBERT J OLEJNIK M.D.
Individual
Internal MedicineNAVAL MEDICAL CTR
SAN DIEGO, CA 92134
(619) 532-8225
1326149980DR. DAVID THOMAS FOSTER MD
Individual
PediatricsNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-0000
1821408063DR. CHRISTINA CAROLE STROMSNESS D.O
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-6400
1194135160DR. TERREL SANDERS M.D.
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-8038
1043621006 LAUREN CHRISTINA SARRAN M.D.
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(916) 532-6400
1063823847DR. ASHLEY VOSS D.O.
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 851-6672
1033345731DR. VIKAS SHRIVASTAVA M.D.
Individual
DermatologyNAVAL MEDICAL CTR 34800 BOB WILSON DR
SAN DIEGO, CA 92134
(619) 251-7471
1548674997 JOSH WASMUND M.D.
Individual
Student in an Organized Health Care Education/Training ProgramNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-6400
1699177238DR. DANIEL ALBERT TOTLEBEN PHARM.D.
Individual
PharmacistNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-6400
1477888477DR. KAI-CHIAO JOE CHANG D.D.S.
Individual
Dentist (Periodontics)NAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 556-8240
1033500202MRS. HELEN YUN RPH
Individual
PharmacistNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(949) 547-4956
1588064125 SHELBY ELIZABETH NAUGHTON MS RD LDN
Individual
Dietitian, RegisteredNAVAL MEDICAL CTR 34800 BOB WILSON DRIVE
SAN DIEGO, CA 92134
(619) 532-9529

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1932248093, enumerated in the NPI registry as an "individual" on February 05, 2007

The provider is located at Naval Medical Ctr 34800 Bob Wilson Drive San Diego, Ca 92134 and the phone number is (619) 532-5990

The provider's speciality is Internal Medicine with taxonomy code 207RP1001X with a focus in Pulmonary Disease

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.

Medicare beneficiaries should expect a typical cost of $140.22 with an average copayment of $35.05 for new patient appointments. Established patients should expect a typical charge of $108.42 and an average copayment of 27.1. Please review your insurance plan or contact the provider directly to determine your specific costs.

This NPI record was last updated on February 05, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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