2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1417446774 DO
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CRYSTAL COBB, DO

Endocrinology, Diabetes & Metabolism Physician in WORCESTER, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
19
Medicare Part D claims · Endocrinology, Diabetes & Metabolism Physician avg: 3K
What the federal data reveals: CRYSTAL COBB, DO is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in WORCESTER, Massachusetts with a Medicare Part D prescribing footprint of 19 claims .

What stands out: CRYSTAL COBB, DO filed 19 Medicare Part D claims in 2023 across WORCESTER, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CRYSTAL COBB, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CRYSTAL COBB, DO at a glance

Quality data not reported

NPI registry status

Active

Issued 05/02/2018

NPI 1417446774

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

19 99% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Massachusetts

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Endocrinology, Diabetes & Metabolism Physician share within Massachusetts

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CRYSTAL COBB, DO is a Endocrinology, Diabetes & Metabolism Physician provider practicing in WORCESTER, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1417446774. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CRYSTAL COBB, DO appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding DO credentials at 55 LAKE AVE N, WORCESTER, MA, 01655, with a listed phone of (508) 334-3206. NPI 1417446774 was issued on 05/02/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COBB most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 19 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $7K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

55 LAKE AVE N
WORCESTER, MA 01655

Provider Details

NPI 1417446774
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials DO
Gender Female
NPI Issued 05/02/2018

Hospital and facility affiliations

Facilities where CRYSTAL COBB, DO bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

THE EMORY CLINIC INC
ATLANTA, GA
UMASS MEMORIAL MEDICAL GROUP INC
WORCESTER, MA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to CRYSTAL COBB, DO. To verify CRYSTAL COBB, DO's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

19
Total Claims
$7K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
45
Total Day Supply
1,370
Generic Drug Cost
$328

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.40

Endocrinology, Diabetes & Metabolism Physician Overview

How CRYSTAL COBB, DO fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

CRYSTAL COBB, DO's 19 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as COBB.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CRYSTAL COBB, DO's specialty?
CRYSTAL COBB, DO specializes in Endocrinology, Diabetes & Metabolism Physician and practices in WORCESTER, Massachusetts. Credentials: DO.
How much does CRYSTAL COBB, DO prescribe under Medicare Part D?
In 2023, CRYSTAL COBB, DO wrote 19 Medicare Part D claims totaling $7K in drug costs for N/A beneficiaries.
Where is CRYSTAL COBB, DO located?
CRYSTAL COBB, DO is located at 55 LAKE AVE N, WORCESTER, MA, 01655. Phone: (508) 334-3206.
What is CRYSTAL COBB, DO's NPI number?
CRYSTAL COBB, DO's National Provider Identifier (NPI) is 1417446774, issued on 05/02/2018.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
Does CRYSTAL COBB, DO accept Medicare?
CRYSTAL COBB, DO appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CRYSTAL COBB, DO's credentials?
CRYSTAL COBB, DO's NPI is 1417446774 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology