MS. CONSTANCE ANNE KLEIN (LCSW) – Clinical Social Worker, NPI 1699842641

MS. CONSTANCE ANNE KLEIN (LCSW) is a healthcare provider. based in Boulder, Colorado. specializing in Clinical Social Worker. They hold the professional credentials LCSW. They hold a License No. 991053 (CO). The NPI Number for MS. CONSTANCE ANNE KLEIN (LCSW) is 1699842641

Main info

Female
Sole Proprietor
Name
MS. CONSTANCE ANNE KLEIN (LCSW)
NPI
1699842641
Phone
Not provided
Address
PO BOX 21150
Enumeration Date
28 November 2006
Last Update Date
31 July 2023
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience67
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for MS. CONSTANCE ANNE KLEIN (LCSW)

  • PO BOX 21150

    BOULDER, CO 803084150

    Phone:

    Type: Mailing

  • Essentia 5, 1705, South Pearl Street, Platt Park, Denver, Denver County, Colorado, 80210, United States

    SUITE 6

    DENVER, CO 802103170

    Phone: (720) 261-4459

    Type: Location

  • 1290 CHAMBERS RD

    AURORA, CO 800117117

    Phone: (303) 617-2300

    Fax: (303) 617-2344

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-11-01

PECOS data refreshed: 2026-06-15

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20071101000187IClinical Social WorkerCOTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 80308)

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Reviews

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Frequently asked questions

What federal number belongs to MS. CONSTANCE ANNE KLEIN (LCSW)?
The federal identifier for MS. CONSTANCE ANNE KLEIN (LCSW) is NPI 1699842641.
Does this profile mean MS. CONSTANCE ANNE KLEIN (LCSW) is currently active?
Yes — MS. CONSTANCE ANNE KLEIN (LCSW) appears active in the national provider directory.
What kind of provider is MS. CONSTANCE ANNE KLEIN (LCSW)?
The page reflects Clinical Social Worker for MS. CONSTANCE ANNE KLEIN (LCSW). Clinical services aligned with this taxonomy classification.
Does MS. CONSTANCE ANNE KLEIN (LCSW) practice in Colorado?
You will see Boulder, Colorado on file for MS. CONSTANCE ANNE KLEIN (LCSW) alongside any extra practice locations.
Is this NPI for an individual or an organization?
This listing corresponds to an Individual Provider.

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