1. Home
  2. Directory
  3. Colorado
  4. Littleton
  5. Emergency Medicine
  6. NPI Profile

DR. CAITLAN MAURA RATTERMAN M.D.
NPI 1811333982
Emergency Medicine in Littleton, CO

Active since May 16, 2013PECOS EnrolledAccepts Medicare Assignment
9670 W. COAL MINE AVE. SUITE 100, SUITE 100, LITTLETON, CO 80123(303) 725-5010(212) 263-6826 Get Directions Write a Review

NPPES record last updated: May 14, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 14, 2019, Aug 1, 2017 (2 updates tracked since 2017).

About Dr. Caitlan Maura Ratterman M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CAITLAN MAURA RATTERMAN M.D. (NPI 1811333982) is an individual emergency medicine provider in Littleton, Colorado, licensed in Colorado (DR0058076) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1811333982
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. CAITLAN MAURA RATTERMANCredential: M.D.
Location Address9670 W. COAL MINE AVE. SUITE 100, SUITE 100Littleton, CO 80123-4006
Mailing Address9670 W. Coal Mine Ave. Suite 100, Suite 100Littleton, CO 80123-4006 · (303) 725-5010 · Fax (212) 263-6826
Phone(303) 725-5010
Fax(212) 263-6826
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMay 16, 2013
Last NPPES UpdateMay 14, 20192 updates tracked since enumeration
✔ NPI 1811333982 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CO · DR0058076✔ Licensed in CO · DR.0058076
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
9670 W. COAL MINE AVE. SUITE 100, Littleton, CO 80123
Open in Google Maps ↗

Other Names 1

Former Name (1)Caitlan Maurea Ganley Md

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Caitlan Maura Ratterman M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5799057923
PECOS Enrollment IDI20170822003148
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Caitlan Ratterman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Usacs Of Colorado Inc
Same address
Emergency Medicine
9670 W COAL MINE AVE STE 100
Littleton, CO 80123
  • Reassigned Medicare billing, Colorado enrollment
  • 468 clinicians in this Medicare group
NPI 1093341489 (330) 493-4443
Emergency Service Physicians, Inc.
0.9 mi
Emergency Medicine
8515 W COAL MINE AVE
Littleton, CO 80123
  • Reassigned Medicare billing, Colorado enrollment
  • 91 clinicians in this Medicare group
NPI 1659906154 (330) 493-4443
Usacs Community Emergency Services Of Colorado, Inc.
4.4 mi
Emergency Medicine
3280 S WADSWORTH BLVD
Lakewood, CO 80227
  • Reassigned Medicare billing, Colorado enrollment
  • 352 clinicians in this Medicare group
NPI 1992330484 (330) 493-4443

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
355 services342 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
342 services299 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
70 services70 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
61 services60 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Caitlan Ratterman's NPI number?

The NPI number for Caitlan Ratterman is 1811333982. It was assigned to this individual provider in the NPPES registry on May 16, 2013. The provider is also known as Caitlan Maurea Ganley MD.

Where is Caitlan Ratterman located?

Caitlan Ratterman practices at 9670 W. Coal Mine Ave. Suite 100 Suite 100, Littleton, CO 80123. The listed phone number is (303) 725-5010.

What is Caitlan Ratterman's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Caitlan Ratterman enrolled in Medicare?

Yes. Caitlan Ratterman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Caitlan Ratterman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caitlan Ratterman reassigns Medicare benefits to 3 organizations: Usacs Of Colorado Inc (Littleton, CO), Emergency Service Physicians, Inc. (Littleton, CO) and Usacs Community Emergency Services Of Colorado, Inc. (Lakewood, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Caitlan Ratterman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Caitlan Ratterman accept?

Health plans from Select Health list Caitlan Ratterman as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Caitlan Ratterman was last updated on May 14, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.