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HEATHER LYNN DAVIS MD
NPI 1154390391
Internal Medicine - Pulmonary Disease in Claremont, CA

Active since March 17, 2006PECOS EnrolledAccepts Medicare Assignment
1601 MONTE VISTA AVE STE 270, CLAREMONT, CA 91711(909) 865-9152(909) 630-7947 Get Directions Write a Review

NPPES record last updated: August 23, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 23, 2019, Sep 13, 2018 (2 updates tracked since 2018).

About Heather Lynn Davis Md NPPES

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

HEATHER LYNN DAVIS MD (NPI 1154390391) is an individual pulmonary disease provider in Claremont, California, licensed in California (A71940) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1998).

NPPES Registry Identity

NPI1154390391
Entity TypeIndividualFemale
Primary Taxonomy207RP1001X
Provider Legal NameHEATHER LYNN DAVISCredential: MD
Location Address1601 MONTE VISTA AVE STE 270Claremont, CA 91711-6604
Mailing Address840 Towne Center Dr, Chaparral Medical Group, Inc.Pomona, CA 91767-5900 · (909) 398-1550 · Fax (909) 398-1488
Phone(909) 865-9152
Fax(909) 630-7947
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1998
Enumeration DateMarch 17, 2006
Last NPPES UpdateAugust 23, 20192 updates tracked since enumeration
✔ NPI 1154390391 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in CA · A71940
Definition
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.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A71940 (CA)
Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X · License A71940 (CA)
1601 MONTE VISTA AVE STE 270, Claremont, CA 91711
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Other Identifiers 1

Medicaid00A719400CA

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

Heather Lynn Davis 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 ID9537143813
PECOS Enrollment IDI20040615000712
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

2

Medicare enrollment records show Heather Davis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chaparral Medical Group Inc
1.4 mi
Family Medicine
430 WEST BASELINE RD
Claremont, CA 91711
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1558689794 (California)
  • 114 clinicians in this Medicare group
NPI 1962464529 (909) 621-3916
Quantum Healthcare Medical Associates Inc.
20 mi
Hospitalist
400 N PEPPER AVE
Colton, CA 92324
  • Reassigned Medicare billing, California enrollment
  • 338 clinicians in this Medicare group
NPI 1568490597 (909) 580-1000

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 7

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.

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.
150 services84 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
74 services50 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
44 services36 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
29 services18 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
20 services20 patients
Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91711 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Referred Medical Equipment & Supplies CMS DME claims 13

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
6 suppliers145 claims145 services$32.76 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
5 suppliers35 claims35 services$73.29 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
4 suppliers35 claims101 services$29.94 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
4 suppliers52 claims290 services$16.18 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
6 suppliers72 claims427 services$12.58 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
6 suppliers130 claims130 services$45.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SLEEPOLOGY
Internal Medicine (Sleep Medicine)
1601 MONTE VISTA AVE STE 270
CLAREMONT, CA 91711
Los Angeles County (909) 865-9152

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 Heather Davis's NPI number?

The NPI number for Heather Davis is 1154390391. It was assigned to this individual provider in the NPPES registry on March 17, 2006.

Where is Heather Davis located?

Heather Davis practices at 1601 Monte Vista Ave Ste 270, Claremont, CA 91711. The listed phone number is (909) 865-9152.

What is Heather Davis's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Heather Davis enrolled in Medicare?

Yes. Heather Davis 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 Heather Davis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Heather Davis reassigns Medicare benefits to 2 organizations: Chaparral Medical Group Inc (Claremont, CA) and Quantum Healthcare Medical Associates Inc. (Colton, CA). 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 Heather Davis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Heather Davis was last updated on August 23, 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.