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MELISSA S DUNN MD
NPI 1598895435
Obstetrics & Gynecology in Longmont, CO

Active since March 07, 2007PECOS EnrolledAccepts Medicare Assignment
1551 PROFESSIONAL LN UNIT 241, LONGMONT, CO 80501(800) 991-6117(888) 812-8191 Get Directions Write a Review

NPPES record last updated: July 24, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 15, 2025, Jul 20, 2020, Mar 31, 2018 and 1 more (4 updates tracked since 2018).

About Melissa S Dunn Md NPPES

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

MELISSA S DUNN MD (NPI 1598895435) is an individual obstetrics & gynecology provider in Longmont, Colorado, licensed in Colorado (DR.0040565) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1998).

NPPES Registry Identity

NPI1598895435
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMELISSA S DUNNCredential: MD
Location Address1551 PROFESSIONAL LN UNIT 241Longmont, CO 80501-6967
Mailing Address3820 Northdale Blvd Ste 201Tampa, FL 33624-1893 · (800) 991-6117
Phone(800) 991-6117
Fax(888) 812-8191
Sole ProprietorNo
Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 1998
Enumeration DateMarch 7, 2007
Last NPPES UpdateJuly 24, 20254 updates tracked since enumeration
NPPES CertifiedJuly 24, 2025
✔ NPI 1598895435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CO · DR.0040565
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedPhlebologyTaxonomy 202K00000X · License DR.0040565 (CO)
Also ListedHospitalistTaxonomy 208M00000X · License DR.0040565 (CO)
1551 PROFESSIONAL LN UNIT 241, Longmont, CO 80501
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Secondary Practice Locations 3

Location 11635 Aurora Ct Fl 3Aurora, CO 80045-2541 · Phone (720) 848-0000
Location 24745 Arapahoe Ave Ste 320Boulder, CO 80303-1082 · Phone (303) 441-0587 · Fax (303) 996-0801
Location 35657 S Himalaya St Ste 210Centennial, CO 80015-5309 · Phone (800) 991-6117 · Fax (888) 812-8191

Other Identifiers 1

Medicaid82686874CO

Accepted Insurance

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

Melissa S Dunn Md 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 ID1355308370
PECOS Enrollment IDI20041210000962
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 Reassignment

Medicare enrollment records show Melissa Dunn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Colorado Medical Group, PLLC
27 mi
Vascular Surgery
3665 JOHN F KENNEDY PKWY STE 1-200
Fort Collins, CO 80525
  • Reassigned Medicare billing, Colorado enrollment
  • 17 clinicians in this Medicare group
NPI 1356714638 (800) 991-6117

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 11

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
246 services89 patients
Chemical destruction of first incompetent vein of arm or leg using imaging guidance 36482
This procedure involves using a chemical to close off a malfunctioning vein in your arm or leg. Imaging guidance is used to accurately locate the vein. This helps improve blood flow by rerouting it through healthier veins.
234 services63 patients
Ultrasound study of one arm or leg veins with compression and maneuvers 93971
This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.
224 services72 patients
Injection of chemical agent into single incompetent vein of leg using ultrasound guidance 36465
This procedure involves injecting a chemical agent into a non-functioning vein in your leg. Ultrasound technology is used to accurately locate the vein. The chemical helps to close off the vein, rerouting blood flow to healthier veins.
154 services50 patients
Ultrasound study of arm or leg veins with compression and maneuvers 93970
An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.
133 services86 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
119 services52 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80501 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
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
Most-billed visit code 99213
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 Melissa Dunn's NPI number?

The NPI number for Melissa Dunn is 1598895435. It was assigned to this individual provider in the NPPES registry on March 7, 2007.

Where is Melissa Dunn located?

Melissa Dunn practices at 1551 Professional Ln Unit 241, Longmont, CO 80501. The listed phone number is (800) 991-6117.

What is Melissa Dunn's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Melissa Dunn enrolled in Medicare?

Yes. Melissa Dunn 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 organization bills Medicare for Melissa Dunn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Dunn reassigns Medicare benefits to Colorado Medical Group, PLLC (Fort Collins, CO). The 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 Melissa Dunn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Melissa Dunn accept?

Health plans from Select Health and UnitedHealthcare list Melissa Dunn 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 Melissa Dunn was last updated on July 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.