Cost of a Colonoscopy Visit
in San Marcos
Reviewed by Momentary Medical Group West PC
San Marcos represents a unique healthcare market within North County San Diego, with limited local specialist options requiring many patients to seek care in nearby cities. Patients in San Marcos pay between $270 and $369 for a Colonoscopy visit, with a median of $270 based on insurance negotiated rates. Currently, there are 0 active providers in San Marcos (0 individual practitioners, 0 group practices), making regional comparison particularly important for cost planning.
Cost Summary for Colonoscopy in San Marcos
Low Estimate
$270
Median
$270
High Estimate
$369
Providers
12
48% below national average
Compare Similar Procedures
How does colonoscopy compare to related procedures in California?
| Procedure | CPT | Low | Median | High | Providers |
|---|---|---|---|---|---|
| Colonoscopy with Biopsy Colonoscopy with biopsy | 45380 | $80 | $308 | $1,785 | 12,256 |
| Colonoscopy with Polyp Removal Colonoscopy with polyp removal by snare | 45385 | $30 | $453 | $1,785 | 9,290 |
| Upper Endoscopy (EGD) Diagnostic upper GI endoscopy | 43235 | $80 | $85 | $598 | 6,177 |
| Upper Endoscopy with Biopsy Upper GI endoscopy with biopsy | 43239 | $80 | $196 | $1,352 | 16,316 |
| ECG / EKG 12-lead electrocardiogram with interpretation | 93000 | $16 | $49 | $88 | 22,603 |
| Echocardiogram Transthoracic echocardiogram with Doppler | 93306 | $79 | $101 | $586 | 17,572 |
| OB Ultrasound Obstetric ultrasound, complete | 76805 | $52 | $90 | $287 | 7,619 |
Important: These are cost estimates only — not a quote and not medical advice.
The prices on this page are self-pay rates, drawn from federal Transparency in Coverage machine-readable files (CPT 45378 — Diagnostic colonoscopy, flexible). They represent what a patient might pay without insurance.
Your actual cost depends on: your specific insurance plan, your remaining deductible, your coinsurance percentage, whether you have met your out-of-pocket maximum, whether the facility and provider are both in-network, and any separate anesthesia or implant fees billed independently.
This page does not constitute medical advice. Whether you need this procedure, and which approach is right for you, is a decision to make with a licensed healthcare provider.
Where this data comes from & what CPT 45378 covers
Data source: Cost figures are derived from UnitedHealthcare Transparency in Coverage machine-readable files for CPT code 45378 (Diagnostic colonoscopy, flexible), as mandated by the CMS Price Transparency Rule.
What CPT 45378 covers: the provider's professional fee for colonoscopy. It does not include facility/hospital fees, anesthesia, pre-operative imaging, post-operative care, or any add-on codes billed separately.
How to read this data
Negotiated Rate
The discounted price an insurer has agreed to pay a specific provider. Most insured patients' bills are calculated from this number, not the higher list price hospitals publish separately.
P5, Median, P95
P5 is the rate at the 5th percentile (low end), Median is the middle value, and P95 is the 95th percentile (high end). This range shows how much the same visit can vary between providers.
What this does not tell you
These rates do not tell you what you personally will pay out of pocket. That depends on your specific plan, how much of your deductible you have already met, your coinsurance rate, and whether the provider is in your network. Call your insurer's member line to get your exact estimate.
Colonoscopy Visit Costs by City in California — 2026
| City | Min Cost | Median Cost | Max Cost |
|---|---|---|---|
| Travis Afb | $90 | $689 | $1,772 |
| Santa Barbara | $85 | $647 | $647 |
| Lompoc | $85 | $647 | $647 |
| Stanford | $85 | $410 | $1,830 |
| Oakland | $85 | $396 | $1,830 |
| South Lake Tahoe | $264 | $391 | $479 |
| Palo Alto | $85 | $355 | $1,556 |
| Fresno | $85 | $340 | $1,395 |
| West Hollywood | $85 | $291 | $647 |
| San Jose | $85 | $282 | $289 |
| Mountain View | $141 | $282 | $282 |
| Los Gatos | $90 | $282 | $462 |
| Campbell | $85 | $282 | $282 |
| Fremont | $85 | $282 | $282 |
| Santa Clara | $80 | $282 | $796 |
| Milpitas | $282 | $282 | $282 |
| Morgan Hill | $251 | $282 | $378 |
| Salinas | $80 | $282 | $812 |
| Walnut Creek | $85 | $279 | $539 |
| San Diego | $85 | $270 | $768 |
| Chula Vista | $270 | $270 | $291 |
| La Jolla | $85 | $270 | $768 |
| Vista | $85 | $270 | $270 |
| La Mesa | $270 | $270 | $270 |
| Oceanside | $270 | $270 | $633 |
| Encinitas | $270 | $270 | $542 |
| National City | $270 | $270 | $937 |
| Carlsbad | $112 | $270 | $662 |
| San Marcos (this city) | $270 | $270 | $369 |
| San Francisco | $85 | $265 | $1,830 |
| Santa Rosa | $90 | $261 | $846 |
| Loma Linda | $80 | $259 | $1,140 |
| Napa | $146 | $259 | $646 |
| Irvine | $85 | $246 | $453 |
| Orange | $85 | $209 | $1,772 |
| Arcadia | $85 | $204 | $1,117 |
| Sacramento | $85 | $203 | $860 |
| Bakersfield | $85 | $159 | $548 |
| Glendale | $85 | $159 | $545 |
| Ukiah | $159 | $159 | $337 |
| Lodi | $148 | $159 | $377 |
| Yuba City | $129 | $159 | $257 |
| Saint Helena | $159 | $159 | $334 |
| Hanford | $150 | $159 | $401 |
| Stockton | $85 | $159 | $1,240 |
| Marysville | $159 | $159 | $408 |
| Visalia | $85 | $159 | $321 |
| Santa Cruz | $85 | $159 | $479 |
| Willits | $159 | $159 | $159 |
| Riverside | $85 | $90 | $445 |
| Los Angeles | $85 | $85 | $282 |
| Santa Monica | $85 | $85 | $146 |
| Torrance | $85 | $85 | $299 |
| Burbank | $85 | $85 | $85 |
| Beverly Hills | $85 | $85 | $600 |
| Thousand Oaks | $85 | $85 | $362 |
| Valencia | $85 | $85 | $191 |
| Pasadena | $85 | $85 | $556 |
| Van Nuys | $85 | $85 | $85 |
| Long Beach | $85 | $85 | $1,772 |
| Ventura | $85 | $85 | $647 |
| Encino | $85 | $85 | $162 |
| Simi Valley | $85 | $85 | $553 |
| Westlake Village | $85 | $85 | $154 |
| Newport Beach | $85 | $85 | $479 |
| West Hills | $85 | $85 | $696 |
| Sylmar | $85 | $85 | $370 |
| Porter Ranch | $85 | $85 | $85 |
| Tarzana | $85 | $85 | $85 |
| Manhattan Beach | $85 | $85 | $538 |
| Marina Del Rey | $85 | $85 | $85 |
| Northridge | $82 | $85 | $456 |
| Fountain Valley | $85 | $85 | $298 |
| Woodland Hills | $85 | $85 | $757 |
| Redondo Beach | $85 | $85 | $458 |
| San Luis Obispo | $85 | $85 | $528 |
| Santa Clarita | $85 | $85 | $590 |
| Calabasas | $85 | $85 | $85 |
| Palm Springs | $85 | $85 | $177 |
| Duarte | $84 | $85 | $1,175 |
| Culver City | $85 | $85 | $686 |
| Whittier | $35 | $85 | $599 |
| Laguna Hills | $35 | $60 | $489 |
Costs reflect self-pay estimates based on insurer-negotiated rates. Insured patients may pay significantly less depending on plan type, deductible status, and network tier.
Jayant Panwar
CEO, Momentary Labs · San Francisco, CA
Jayant has analyzed healthcare pricing data from CMS Transparency in Coverage files since 2022, covering more than 50 million negotiated rate records across all 50 states. His work focuses on making insurer machine-readable files accessible to patients and researchers.
The cost figures on this page reflect his ongoing work to make this data accessible to patients.