DR. MARK HARRISON SHOWEN M.D.
NPI 1477576817
Pediatrics in San Mateo, CA
NPI Status: Active since July 26, 2006
Contact Information
50 S SAN MATEO DR
SUITE 180
SAN MATEO, CA
ZIP 94401
Phone: (650) 342-4145
Fax: (650) 342-2070
- Individual
- Male
- Pediatrics
- PECOS Enrolled
About MARK SHOWEN
This page provides the complete NPI Profile along with additional information for Mark Showen, a pediatrician established in San Mateo, California with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1477576817 assigned on July 2006. The practitioner's primary taxonomy code is 208000000X with license number G052160 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1477576817
- Provider Name
- DR. MARK HARRISON SHOWEN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 50 S SAN MATEO DR SUITE 180 SAN MATEO, CA 94401
- Location Phone
- (650) 342-4145
- Location Fax
- (650) 342-2070
- Mailing Address
- 50 S SAN MATEO DR SUITE 180 SAN MATEO, CA 94401
- Mailing Phone
- (650) 342-4145
- Mailing Fax
- (650) 342-2070
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-26-2006
- Last Update Date
- 07-08-2007
- Code Navigator
A pediatrician like Mark Showen is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.
Location Map
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
Pediatrics
- Taxonomy Code
- 208000000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G052160
- License State
- CA
- Taxonomy Description
- A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Medicare Participation & PECOS Enrollment Status
Mark Showen 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
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 94401 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $104.51
- Minimum New Patient Price $69
- Maximum New Patient Price $202.35
- Average New Patient Copayment $26.12
- Minimum New Patient Copayment $17.25
- Maximum New Patient Copayment $50.58
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $119.48
- Minimum Established Patient Price $23.44
- Maximum Established Patient Price $166.46
- Average Established Patient Copayment $29.87
- Minimum Established Patient Copayment $5.86
- Maximum Established Patient Copayment $41.61
* 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. MARK HARRISON SHOWEN M.D.
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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. | |||||||||
| 1 | 4 | 7 | 7 | 5 | 7 | 6 | 8 | 1 | 7 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 4 | 14 | 7 | 10 | 7 | 12 | 8 | 2 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 4 + 1 + 4 + 7 + 1 + 0 + 7 + 1 + 2 + 8 + 2 + 24 = 63 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 63 = 7 | 7 | ||||||||
The NPI number 1477576817 is valid because the calculated check digit 7 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 |
|---|---|---|---|
| 1184617136 | DR. ALEXANDER MOLDANADO M.D. Individual | Family Medicine | 50 S SAN MATEO DR SUITE 230 SAN MATEO, CA 94401 (650) 348-0454 |
| 1306831599 | DR. KRISTEN WILLISON MD Individual | Family Medicine | 50 S SAN MATEO DR 230 SAN MATEO, CA 94401 (650) 348-0454 |
| 1346235538 | ADAM PALEY MD Individual | Family Medicine | 50 S SAN MATEO DR SUITE 230 SAN MATEO, CA 94401 (650) 348-0454 |
| 1740276187 | SOONG CHAPMAN AND BEYMER Organization | Pediatrics | 50 S SAN MATEO DR STE 260 SAN MATEO, CA 94401 (650) 579-6500 |
| 1033180211 | DR. GEORGE WILLIAM SHORAGO M.D. Individual | Otolaryngology | 50 S SAN MATEO DR SUITE 320 SAN MATEO, CA 94401 (650) 340-7200 |
| 1891740403 | INTERNAL MEDICINE ASSOCIATES OF SAN MATEO Organization | Specialist | 50 S SAN MATEO DR SUITE 370 SAN MATEO, CA 94401 (650) 347-0063 |
| 1013938786 | DR. STEPHEN BUCHNER MD Individual | Pediatrics | 50 S SAN MATEO DR STE 180 SAN MATEO, CA 94401 (650) 342-4145 |
| 1639190861 | DR. PAUL JEMELIAN MD Individual | Internal Medicine | 50 S SAN MATEO DR SUITE490 SAN MATEO, CA 94401 (650) 340-6302 |
| 1215950316 | DR. PETER CHI-TUNG WANG M.D. Individual | Pediatrics | 50 S SAN MATEO DR SUITE 180 SAN MATEO, CA 94401 (650) 342-4145 |
| 1962411140 | MS. ANN - POCAPALIA RD, CDE Individual | Nutritionist (Nutrition, Education) | 50 S SAN MATEO DR SUITE 380 SAN MATEO, CA 94401 (650) 591-8228 |
| 1891801932 | SHELLEY L ADAMS MD Individual | Obstetrics & Gynecology | 50 S SAN MATEO DR #420 SAN MATEO, CA 94401 (650) 344-1114 |
| 1538261177 | DR. JENNY SUFEI YANG M.D. Individual | Pediatrics | 50 S SAN MATEO DR SUITE #180 SAN MATEO, CA 94401 (650) 342-4145 |
| 1497846901 | DR. BRIAN HOWARD HENDERSON M.D. Individual | Internal Medicine (Hematology & Oncology) | 50 S SAN MATEO DR SUITE 300 SAN MATEO, CA 94401 (650) 348-0893 |
| 1184711988 | MARNA M SKAAR M.D. Individual | Specialist | 50 S SAN MATEO DR SUITE 280 SAN MATEO, CA 94401 (650) 342-5667 |
| 1699851402 | BAY AREA UROLOGY MEDICAL GROUP Organization | Urology | 50 S SAN MATEO DR SUITE 120 SAN MATEO, CA 94401 (650) 348-7770 |
| 1861578510 | DR. DAVID J CARO MD Individual | Urology | 50 S SAN MATEO DR SUITE 120 SAN MATEO, CA 94401 (650) 348-7770 |
| 1700954278 | MR. BRUCE H BERN M.D. Individual | Ophthalmology | 50 S SAN MATEO DR 200 SAN MATEO, CA 94401 (650) 342-4595 |
| 1467520833 | DR. ROBERT S FILER M.D. Individual | Ophthalmology | 50 S SAN MATEO DR SUITE 200 SAN MATEO, CA 94401 (650) 342-4595 |
| 1144398512 | DR. MICHAEL K MACDONALD M.D. Individual | Ophthalmology | 50 S SAN MATEO DR SUITE 200 SAN MATEO, CA 94401 (650) 342-4595 |
| 1386792919 | DR. CHARLES M SPITZ DDS Individual | Dentist | 50 S SAN MATEO DR SAN MATEO, CA 94401 (650) 375-8300 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1477576817, enumerated in the NPI registry as an "individual" on July 26, 2006
The provider is located at 50 S San Mateo Dr Suite 180 San Mateo, Ca 94401 and the phone number is (650) 342-4145
The provider's speciality is Pediatrics with taxonomy code 208000000X
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 $104.51 with an average copayment of $26.12 for new patient appointments. Established patients should expect a typical charge of $119.48 and an average copayment of 29.87. Please review your insurance plan or contact the provider directly to determine your specific costs.
This NPI record was last updated on July 26, 2006. 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].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.